It is comfortable for you to use the non-slip, light-weight, knurled, professional tattoo machine grips Precision milled from high-grade aluminum-alloy. Set-screws and premium-grade,stainless-steel back-stems are included. Easy to clean and fully autoclavable. Colour:blueDiameter: 7/8" Length: 2" (plus back-stem)Package included: 1 x blue Aluminum Alloy Tattoo Machine Grips Tubes