Steel locking anal plug with secure mechanism for advanced users seeking control and restraint play
Key Features:
Precision steel construction with unique expansion mechanism
Integrated locking system for complete control
14cm length with expandable width from 4cm to 5.8cm
Designed for advanced anal play and BDSM scenarios
Enables temperature play and intense sensory experiences
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Anal play demands precision, safety, and control—especially if you're experienced and ready for something beyond basic toys. Master Series Trillium Steel Locking Anal Plug delivers all three through its innovative expanding mechanism and lockable steel design.
Master Series Trillium Steel Locking Anal Plug is a precision-engineered steel toy built for advanced users seeking controlled, progressive expansion. Its medical-grade stainless steel construction offers durability, smooth insertion, and exceptional temperature responsiveness. The innovative unfurling mechanism lets you gradually increase width from 4cm to 5.8cm as comfort allows, while the integrated locking system adds a psychological and physical dimension of control and secure wear.
What sets this plug apart is its combination of mechanical sophistication and BDSM-specific design. The flared base ensures safety, and padlock compatibility transforms it into a power-exchange tool. See the full BDSM Australia range of Butt Plugs to compare options across materials and mechanisms.
Apply generous water-based lubricant to the plug and your anus. Insert slowly with the mechanism in its closed 4cm position. Once fully seated, gradually activate the expansion mechanism as your comfort increases. Keep the flared base external at all times. For extended wear, engage the locking mechanism and secure with the included padlock to prevent accidental retraction.
Temperature play enhances sensation—warm or cool the steel before insertion for heightened psychological effect. Advanced users can combine this plug with Butt Tails for layered sensory experiences. Always start slowly, listen to your body, and never force expansion beyond comfort.
Clean the plug immediately after use with warm water and a specialized toy cleaner. For deep sterilisation, boil for 3–5 minutes and dry completely with a lint-free cloth. Store in the provided bag away from direct sunlight and extreme heat. Steel is non-porous and durable, so proper cleaning ensures long-term hygiene and longevity.
Understanding the difference between anal plugs and prostate massagers helps you choose the right tool for your goals. Read more about how these toys work and which suits your body and experience level. Explore Anal Plugs Vs Prostate Massagers for detailed guidance.
Master Series Trillium Steel Locking Anal Plug has become essential to my training toolkit. The cold steel creates immediate psychological tension the moment it touches skin. I control every stage of expansion, deciding when my submissive experiences fullness—this command over their body's response is the real power. Watching them breathe through each increment of width tells me exactly how far I can push.
The locking mechanism transforms this plug into a complete ownership device. My submissives understand that once locked, they belong entirely to me. I've combined temperature play with the expansion—ice-cold steel followed by warm breath creates disorientation that deepens their surrender. Some of my most resilient slaves become completely vulnerable under its precise pressure.
Psychological control matters more than physical sensation with this toy. Each locked moment reinforces my dominance and their submission. The unfurling mechanism gives me granular control over their experience, and I use that control to demonstrate the difference between pain and pleasure, between struggle and surrender. My slaves learn quickly that discomfort delivered by my hand is a gift.
See this and similar tools in action across my 300+ training videos on the BDSM Australia channel.
| Feature | Master Series Trillium | Standard Steel Plug | Silicone Expanding Plug |
|---|---|---|---|
| Material | Medical-grade stainless steel | Stainless steel, fixed size | Body-safe silicone |
| Expansion | Mechanical, 4–5.8cm | None | Limited, manual squeezing |
| Locking | Integrated, padlock-compatible | None | None |
| Temperature play | Excellent steel responsiveness | Good, but no expansion control | Minimal |
| Best for | Advanced users, power exchange | Intermediate users | Beginners, sensitive users |
Discover the precision and control that only Master Series Trillium Steel Locking Anal Plug delivers. Its expanding mechanism and lockable design make it the choice for serious enthusiasts at BDSM Australia. Progressive expansion, temperature play, and secure wear combine in one engineered tool. Order yours today and experience the difference advanced design makes. From First Time Buyers to Experienced Players.
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.