Ass Vault Locking Anal Expander: Stainless Steel Expanding Butt Plug with Key Lock, Petals Open 1.5 to 2.2 Inches, Master Series Anal Bondage Toy
Ass Vault Locking Anal Expander: Stainless Steel Expanding Butt Plug with Key Lock, Petals Open 1.5 to 2.2 Inches, Master Series Anal Bondage Toy is backordered and will ship as soon as it is back in stock.
Ass Vault Locking Anal Expander: Stainless Steel Expanding Butt Plug with Key Lock, Petals Open 1.5 to 2.2 Inches, Master Series Anal Bondage Toy is backordered and will ship as soon as it is back in stock.
Ass Vault Locking Anal Expander
The Ass Vault Locking Anal Expander is a stainless steel butt plug whose metal petals expand from 1.5 to 2.2 inches in diameter and lock in place with a key. It measures 3.4 inches overall with a 2.8 inch insertable length, giving experienced players a heavy, lockable anal bondage toy.

Stainless steel locking plug shown with petals expanded
Ass Vault Locking Anal Expander Overview
Made of durable, non-porous stainless steel, the Ass Vault is compatible with all types of lubricant and built to last for years. Using the flat circular key you can expand the metal petals of the plug for a more intense backdoor fill, then use the gold pin locking key to hold that expansion in place so the petals will not move until you release them. The premium steel is temperature sensitive and has a substantial weight that is felt as a satisfying, constant, downward pull.
The tapered tip helps make insertion easy, while the slim neck and wide base keep the plug safely in place without slipping further inside. It is a serious, industrial-style locking plug for experienced kinksters, and it pairs naturally with other metal anal toys and adult toys for those who enjoy anal bondage, or with steel restraints from the wider dungeon equipment range.
Key Features
- Stainless steel plug non-porous, nickel-free, durable, and compatible with all lubricants
- Expanding petals open from 1.5 to 2.2 inches with a turn of the flat circle key
- Secure locking mechanism a gold locking pin holds the plug expanded or closed as you choose
- Tapered tip and slim neck ease insertion while the wide base keeps the plug securely in place
- Substantial steel weight gives a satisfying, constant downward pull during wear
Construction and Materials
The Ass Vault Locking Anal Expander is machined from non-porous, nickel-free stainless steel for a sleek, hygienic toy that lasts. Because it is solid metal, it is temperature sensitive and can be warmed in warm water before use, and it can be cleaned by boiling or wiping with isopropyl alcohol. The plug includes a flat circular expander key and a gold pin locking key, both of which must be kept safe to release the device. It fits a wider kit of fetish gear and complements heavier leather restraints for bondage scenes.
Specifications
| Specification | Detail |
|---|---|
| Overall length | 3.4 inches |
| Insertable length | 2.8 inches |
| Expanded diameter | 1.5 to 2.2 inches |
| Weight | 9.3 oz (264 g) |
| Material | Stainless steel |
| Color | Silver |
| Locking | Key lock with gold pin and flat circular expander key |
| Brand | Master Series |
Pairs Well With
Frequently Asked Questions About Anal Toys
What is a locking anal expander?
A locking anal expander is a metal butt plug whose petals open inside the body and then lock in place. The Ass Vault Locking Anal Expander uses a flat circular key to expand its stainless steel petals from 1.5 to 2.2 inches, then a gold pin key locks that expansion so the plug stays put until you release it.
How do you use the Ass Vault expander?
Insert the contracted plug with plenty of lube, then use the flat circular key to expand the metal petals only to a comfortable degree. Once you reach the desired expansion, use the gold pin locking key to hold it in place. Reverse the keys to unlock and contract the Ass Vault before removal.
What is this anal plug made of?
The Ass Vault Locking Anal Expander is made of non-porous, nickel-free stainless steel in a silver finish. The steel is durable, compatible with all lubricants, and temperature sensitive, so it can be warmed before use. Its substantial weight is felt as a satisfying, constant downward pull during wear.
How big is the Ass Vault plug?
The Ass Vault measures 3.4 inches in overall length with a 2.8 inch insertable length. Closed, it slides in easily thanks to a tapered tip, and the petals then expand from 1.5 inches up to 2.2 inches in diameter. It weighs 9.3 ounces, giving it a heavy, grounded feel.
Is the Ass Vault expander safe for beginners?
This is a serious, industrial-style locking plug intended for experienced kinksters rather than beginners. Only expand the petals to a comfortable degree and never force them. Keep both the gold pin and the flat circular key nearby at all times, since you need them to unlock and remove the plug safely.
How do you clean a stainless steel butt plug?
Because it is non-porous stainless steel, the Ass Vault can be cleaned by boiling it in water with cleaning solution or by wiping it with isopropyl alcohol. Clean it before and after each use. The slim neck and wide base also keep the plug from slipping further inside during play.
How long can you wear the Ass Vault plug?
Wear time is personal, so let comfort and circulation guide you rather than the clock. The slim neck and wide base hold the Ass Vault securely without it shifting inside, but expand the petals only to a comfortable degree, keep both keys close, and remove the plug if you feel numbness or discomfort.
Add the Ass Vault Locking Anal Expander to Your Collection
Take anal play seriously with this heavy stainless steel expander that opens and locks in place for committed anal bondage from Master Series.






