Material: It is made of quality material plating and the surface is anti-rust, which has wear resistance and hardness, giving a long service life compatible with youEasy to operate: These Sharpening Wheel are designed compatible with Chainsaw and steel,and more, you can apply it to polish without disassembling the chain, which reduces the number of times you have to replace it.which can improving work efficiencyConvenient to assemble: our Burr Grinding Stone File are easy to install, you can apply it to polish without disassembling the chain, which saves time and efcompatible witht compatible with you, improving work efficiencyWidely applicable: these burr grinding stone files are widely applied compatible with machinery, bearing, mold, casting parts deep hole, different internal surface, welding spot, welding seam grinding and burr grindingcolour:Gold+silver+pinkMaterial:emeryPackage Contents:36 x Burr Grinding Stone File(4mm, 12 pieces compatible with each color)Only the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.