Nice Build, High Quality - Orange Silicone Wrap on each needles, locks perfectly and silicone finger ledge is very comfortable. Especially for long sessions, give you more area for rest your hands. INKin assorted tattoo cartridges shaders have professional membrane system prevents the ink to be back to grip or machine. This bulk cartridge needles fit for all standard tattoo cartridge grips & wireless and rotary tattoo machines. Light clear colors tip body, Better visibility, Low profile housing & better ink flow & shaped on the inside, Smooth edges eliminate additional trauma. INKin Cartridge Needles used medical grade plastic tips, made of surgical stainless steel, 100% EO Gas Sterilized and Individually packaged. 16Pcs/box.