Material: Silicone. The Ambition Disposable tattoo grip cover are very comfortable to work with. The grip cover are covered in silicone, offering extra comfort, more control, and reduced strain, as well as absorbing vibrations. The Ambition disposable grip cover are the safety of a single use disposable grip cover. Ethylene oxide (E.O.) gas sterilized and individually packaged. These tattoo girp cover can fitted on Ambition Ninja, Ambition Troll, Ambition Soldier and Ambition Flamingo tattoo machine. They are convenient and the first choice of professional tattoo artists. Package Include: 25 pieces disposable tattoo grip cover.