This is 100Pcs Tattoo O-rings for Tattoo Machine. It is new and high quality never used. Rubber high-dampening o-rings designed specifically for tattoo machine use. It is good choice for you! Features Rubber high-dampening o-rings designed specifically for tattoo machine use Excellent quality tattoo machine O-ring Carefully designed, excellent for use Perfect for any tattooist Specifications Condition New Material Rubber Outer diameter 0.55 inch / 1.4cm Inner diameter 0.35 inch / 0.9cm Thickness 0.08 inch / 0.2cm Quantity 100 Color Black