Vac-U-Lock Black Universal Strap On. Take your playtime to the next level. Submission meets action in this dual function ball gag designed for the world's first fully interchangeable strap on and accessory system. The patented Vac-U-Lock plug end is compatible with any Vac-U-Lock attachment for pleasuring partners, while the soft silicone ball is formed with indentations to accommodate and protect the mouth and teeth during vigorous play. For even more fun, reverse it to gag your sub with the attachment of your choice! Product features: versatile padded strap on plug. Fully adjustable 60 inches nylon strap included. Unique design curves where you do. Attach to any part of the body. Sturdy curved base flexes to fit. Phthalate free, body safe.