set2: 50 x Burr Grinding Stone File + 30 x Grinding Bits Sturdy and material: made of quality emery grain, effective grinding effect, fine and even, fine carving, hard texture, to you for long time. Chainsaw sanding head: can be applied instead of a file, so that your chain be pointed as before, the chain does not need to be removed when working. Wide application: these burr grinding stone files are suitable for metal polishing like chainsaw, jade, wood, mold, steel, etc. Size detail: each of the grinding head is about 5/32 inch/ 4 mm in diameter, 7/8 inch/ 24 mm in length, and the shank part measures about 3 mm in diameter, total length is 46 mm; Mesh :120-150. What you receive: comes with 30 pieces burr grinding stone files, enough to apply in and meet your replacement needs. Size detail: each of the pink grinding head is about 0.16 Inch/ 4 mm in diameter, 0.94 inch/ 24 mm in length, and the shank part measures about 0.12 inch/ 3 mm in diameter, total length is .1.81 inch/ 46 mm. Solid material: burr grinding stone file is made of grinding stone with good hardness, suitable for metal polishing, especially for steel parts after heat treatment, and not easy to get broken. Applicable occasions: these polishing grinding tools are widely applied for machinery, bearing, mold, casting parts deep hole, different internal , welding spot, welding seam grinding and burr grinding. Package content: comes with 50 pieces burr grinding stone files, enough to apply in and meet your replacement needs. Colour:Silver/Pink+silver Material: Emery/Chrome steel jade + alloy Package Contents: 50 x Burr Grinding Stone File 30 x Grinding Bits Only the above package content, other products are not included. Note: Light 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.