S10/FM12 Modular System: Reverse-u-lock

This is a part of the S10/FM12 Modular System, therefore an S10/FM12 Insert is required.

This module is pure evil.  This module actually has the Vac-U-Lock attachment on the inside. As the module is screwed into the mask, the toy starts going down your throat. As you twist the module, the toy gets deeper and deeper.  This toy also twists as it goes down. Very tricky.

Dildos sold separately - designed for the 8" Dong sold by F-machine 

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Gas mask not include, dildo not included and requires an S10/FM12 insert to be attached to mask.

These items are novelty items, they should be used at your own risk.