This new grip was designed to be compatible with all tattoo needle cartridges. The lightweight aircraft aluminium helps reduce the amount of fatigue on your wrist while providing ergonomic comfort. The Pro-Design Needle Cartridge Grip features fine knurling to prevent slippage, anodising to preserve surface finish, and a stainless steel back stem. Each grip includes Pro-Design Needle Bar Plungers. Autoclave-ready. Made in the USA.