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
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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.
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.
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.
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.
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.
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.
| 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 |
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.