Spartacus Silicone Removable Ball Gag 2in. (Swirl)Now you can silence even the most sensitive of submissives; these hot new Spartacus ball gags are 100% allergen-free! They feature a rubber-free silicone gag and nickel-free hardware, as well as a removable, washable strap attaching the ball to the leather head-strap.Silicone Gag. Leather Strap. Nickel-Free. Adjustable.