Masterjack Double Penetration Jo Male Stroker By Oxballs

$149.99
$149.99

OxBalls Masterjack silicone double penetration stroker with dual openings in Clear Ice Blue Ice Black Ice

Key Features:

Dual-channel design for intense stimulation

Medical-grade silicone construction

7-inch flexible configuration

Advanced sensory experience

Innovative male pleasure engineering

Vendor: OxBalls
SKU: NEW-3000-BLACK
Availability: In stock
Product type: Masturbators and Strokers
Please hurry! Only 15 left in stock
Colour: Black

Want intense dual stimulation but tired of single-channel strokers that feel one-dimensional? The Oxballs Masterjack Double Penetration JO Male Stroker delivers simultaneous multi-point sensation through its innovative dual-channel design, engineered from medical-grade silicone for responsive, personalized control.

At a glance
  • Length: 7 inches
  • Material: Medical-grade silicone
  • Design: Dual-channel for simultaneous stimulation
  • Operation: Manual, user-controlled pressure
  • Colors: Clear Ice, Blue Ice, Black Ice
  • Cleaning: Water and mild soap
🚚 Plain, discreet packaging🔒 Discreet billing↩︎ Hygiene-conscious returns policy

What it is

The Oxballs Masterjack Double Penetration JO Male Stroker is a dual-channel male stroker built from 100% medical-grade silicone. Its 7-inch length houses two distinct internal passages, each roughly 1 inch in diameter, allowing simultaneous stimulation across multiple points. The flexible silicone responds to pressure and heat, delivering sensation that adapts to your grip and technique. Unlike traditional single-channel designs, this stroker creates a more complex sensory experience through coordinated dual stimulation.

What sets the Masterjack apart is its innovative structure and material quality. The silicone is hypoallergenic, non-porous, and body-safe, making it durable and easy to maintain. See the full BDSM Australia range of Masturbators to compare options. The translucent design comes in three color variants, and manual operation means you control every aspect of speed, depth, and intensity without batteries or electronics.

Key features

  • Dual-channel architecture: Two independent passages deliver simultaneous stimulation for enhanced sensation and engagement.
  • Premium silicone construction: Medical-grade material is flexible, durable, hypoallergenic, and retains temperature for realistic feel.
  • User-controlled intensity: Manual operation lets you adjust pressure, depth, and stroking speed to suit your preference.
  • Compact yet comprehensive: 7 inches long with 1-inch diameter channels provide substantial stimulation without excessive bulk.
  • Easy maintenance: Non-porous silicone rinses clean with warm water and mild soap, then air dries for storage.

Specifications

  • Total length: 7 inches
  • Channel diameter: Approximately 1 inch per passage
  • Material: 100% medical-grade silicone, hypoallergenic and non-porous
  • Operation: Manual; no batteries, motors, or electronic components
  • Color options: Clear Ice, Blue Ice, Black Ice
  • Waterproof: Silicone body is water-resistant for easy cleaning
  • Box contents: One Oxballs Masterjack stroker, discrete packaging, care instructions

How to use a masturbators and stroker

Begin by applying generous water-based lubricant to both internal channels. Slowly guide your penis into the dual passages, allowing the silicone to envelop you. Adjust your grip pressure and depth to discover what feels best. Experiment with different stroking rhythms—slow and deliberate, rapid, or alternating between channels—to find your preferred intensity.

Vary your technique across sessions to keep sensation fresh. You can warm or cool the silicone beforehand for temperature play, or adjust lubrication levels to change friction. Many users find that switching between firm and gentle pressure creates dynamic stimulation. Explore App Controlled Masturbators if you want hands-free or remote-controlled options in future. Always rinse thoroughly with warm water and mild soap after use, then air dry completely before storage.

Use generous water-based lubricant to reduce friction, go slowly on first use to acclimate to the dual channels, and always clean thoroughly with warm water and mild soap after each use. Safety first. This information is general in nature only and is not medical or professional advice; it does not account for your individual circumstances. Discontinue use immediately if you experience pain, numbness, discolouration, irritation or discomfort, and seek advice from a qualified medical professional if you have a relevant health condition or if symptoms persist.

Care and storage

Rinse the stroker thoroughly with warm water and mild antibacterial soap immediately after use, paying attention to both internal channels. Air dry completely on a clean cloth before storing. Keep it in a cool, dry location away from direct sunlight and heat, which can degrade silicone over time. Store in a discrete pouch or container to protect it from dust and maintain privacy.

Learn more

Understanding stroker design, materials, and technique helps you get the most from your purchase. Read detailed guidance on male masturbator options and best practices to optimize your experience. Check out Tenga Masturbators for insights into stroker innovation and care across different brands.

Mistress Athena's training notes

The Masterjack's dual channels create a powerful tool for male submission work. I use it to control sensation with precision—my submissives cannot anticipate which passage will deliver intensity. The silicone's flexibility allows me to manipulate pressure from outside, forcing surrender through unpredictability. Watching their bodies respond as I alternate between channels reveals how completely they've yielded to my direction.

My technique involves gradual escalation. Starting slow, I build pressure across both channels simultaneously, then shift to one passage alone, creating psychological tension. Submissives struggle against the sensations I'm controlling, and that resistance is where real obedience emerges. The device becomes a bridge between my will and their body's involuntary response.

Temperature play deepens the experience. I warm or cool the silicone beforehand, adding sensory surprise that destabilizes composure. Each session becomes a carefully orchestrated lesson in relinquishing control. The Masterjack transforms a simple stroker into an instrument of dominance—my submissives learn that pleasure itself is conditional, granted only through submission to my command.

See this and similar tools in action across my 300+ training videos on the BDSM Australia channel.

How it compares

Feature Oxballs Masterjack Single-Channel Stroker App-Controlled Stroker
Stimulation Type Dual simultaneous channels Single passage Motorized, app-controlled patterns
Material Medical-grade silicone Silicone or TPE variants Silicone with motor housing
User Control Full manual control Manual stroking only Hands-free, remote-controlled
Best For Advanced dual-sensation seekers Simplicity and direct feedback Convenience and automation
Maintenance Rinse and air dry Rinse and air dry Careful motor-unit cleaning required

Why you'll reach for it

Pick up the Oxballs Masterjack Double Penetration JO Male Stroker and experience dual-channel stimulation that single designs cannot match. Medical-grade silicone, intuitive manual control, and innovative dual-passage engineering make this stroker a standout choice at BDSM Australia. Your next session starts here. Quality Bondage Gear Without the Guesswork.

BDSM Australia ships with Australia Post. We ship from Sydney.

All in-stock orders placed before 12pm AEST (Sydney Time) on business days are generally processed on the same day. Packages are usually received 1-6 business days after shipping, but may subject to any postage carrier related delays beyond our control.

Free standard shipping on orders shipped within Australia above $200. For orders below $200 standard shipping within Australia is $12.95 and will be added at checkout.

Orders addressed to P.O box, G.P.O box or Parcel Collect will be handled by Australia Post. Extra time should be allocated for these orders.

Shipping Transit Times (Including Free Shipping)

Shipping time refers to the estimated time that it will take to deliver your order after it’s ready to ship (Please note this does not include time to process your order). Shipping time does not commence after your order is put through but begins the moment your order has been processed and is ready to dispatch via the our freight carrier..

1. Major City & Metro Areas (within Australia)

All in stock orders are generally processed on the same day the order was placed on business days for orders received before 12pm. Generally, orders are processed and shipped the same day or next business day.

Orders are typically received 1-6 business days after shipping. For larger packages please allow an extra 1-2 business days for delivery.

If no one is available at your delivery address to accept your order a second delivery may be scheduled or you will be notified that your order can be collected from the nearest depot location.

2. Rural Areas (within Australia)

All orders are generally processed on the same day the order was placed on business days before 12pm.

Generally, orders are processed and shipped the same day or next Business day.

Packages below 2kg are usually received 3-6 business days after shipping. For larger packages please allow an extra 1-2 business days for delivery.

If no one is available at your delivery address to accept your order a second delivery may be scheduled or you will be notified that your order can be collected from the local Australia Post depot.

International Shipping

The price for international shipping is AU$12.95 for orders equal to or below 0.399kg (399grams), and AU$22.95 for orders with a total weight equal to or above 0.4kg (400 grams).

All in-stock orders placed before 12pm AEST (Sydney Time) on business days are generally processed on the same day. Packages are usually received 6-30 business days after shipping. 

If no one is available at your delivery address to accept your order a second delivery may be scheduled or you will be notified that your order can be collected from your nearest delivery depot.

Please note in regards to all orders

– These expected delivery dates/times are based on carrier shipping practices, your destination, and the items in your order.
– Expected delivery dates are estimates. Orders can be delayed due to fraud verification or the time of the order being placed. Items that are not regularly stocked cannot be held to the expected delivery dates.
– Orders may be delivered in separate shipments.
– The order cut off times are based on normal Business Hours and exclude weekends and Holidays: Monday – Friday 12 pm
– When your order ships you will receive an email from us with a link to track your order.  If you receive your tracking number before 6 pm (AEST) it may not be updated on the Carrier’s website until that evening.

Due to large amounts of online credit card fraud, all orders are subject to approval by our payment verification department. We will notify you by phone or email should your order be delayed.

We have a 14 day return policy, which means you have 14 days after receiving your item to request a refund for any defective products.

Returns and exchanges are only available for faulty items, goods not as described, or in some instances, for incorrect sizing.

Due to health and safety regulations, sex-toy.com.au cannot resell any returned or exchanged products.

This policy is in place to prioritise your well-being and ensure that you receive the highest standard of hygiene and quality in all products.

To be eligible for a refund, your item must be in the same condition that you received it, unworn or unused, with tags, and in its original packaging.

You’ll also need the receipt or proof of purchase. We do not issue refunds for change of mind or incorrect choice.

Under Australian Consumer Law, we are not obliged to accept returns for “incorrect choice” or “change of mind” so please choose your products carefully. 

Any freight and insurance costs to return the item to us are at your expense. This includes the liability for any lost freight – send via registered post.
If your return request is accepted, we will provide you with all instructions on how and where to send your package. Items sent back to us without first requesting a return will not be accepted.

Damages and issues

Please inspect your order upon reception and contact us immediately if the item is defective, damaged or if you receive the wrong item, so that we can evaluate the issue and make it right.

Exceptions / non-returnable items

We do not accept returns for any products that have change of mind, damaged products, or for products that have been used or do not have their original packaging.

Please get in touch if you have questions or concerns about your specific item.

Unfortunately, we cannot accept returns on sale items or gift cards.

Refunds

We will notify you once we’ve received and inspected your return, and let you know if the refund was approved or not. If approved, you’ll be automatically refunded on your original payment method within 7 business days.

Please remember it can take some time for your bank or credit card company to process and post the refund too.

Frequently Asked Questions

What is the Oxballs Masterjack Double Penetration JO Male Stroker?
The Oxballs Masterjack is a premium silicone male stroker designed with a dual-channel configuration for simultaneous stimulation, measuring 7 inches long and engineered to provide intense personal pleasure through its innovative texture and design.
Does the Masterjack male stroker provide unique stimulation?
The Masterjack delivers exceptional stimulation through its dual-channel structure, allowing simultaneous penetrative experiences that create more complex sensory engagement compared to traditional single-channel male strokers.
When should users apply lubricant with the Oxballs Masterjack?
Apply water-based lubricant generously before and during use to enhance comfort, reduce friction, and maximize the stroker's sensory potential across both internal channels for optimal stimulation.
Will the Masterjack improve personal sexual experiences?
The Masterjack significantly enhances personal sexual experiences by offering simultaneous stimulation, medical-grade silicone construction, flexible texture, and a design that provides more intense and complex sensory responses.
Should the Masterjack be used in specific sexual scenarios?
The Masterjack is ideal for solo exploration, can be incorporated into BDSM play, and offers maximum flexibility for users seeking advanced stimulation techniques beyond traditional male stroker designs.

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