Rugged and durable : Diamond chainsaw sharpener is made of high-quality particles and uses titanium plating process to extend its service life Multi-size application : Three sizes of chainsaw sharpener are applicable to 5 or 32inch electric saws, 3 or 16inch small oil chain saw wheels, 7 or 32inch oil chain saw wheels Easy to use : The tail diameter of chainsaw sharpener bits is 3mm, which is suitable for most tools and convenient for polishing without removing the chain Sufficient quantity : 3 sizes - 5 or 32inch, 3 or 16inch, 7 or 32inch (4.0mm, 4.8mm, 5.5mm), 10pcs for each size, 30pcs in total Widely used : Suitable for polishing and carving, such as sculpture, jade, precious stone, parts, etc Name: Chainsaw Chain Grinding Head Material: Corundum Color: Gold diameter: 3mm Applicable tools: electric grinding machines, electric drills, and other electric tools 4.0mm suitable for electric chain saws, for 3 or 8 chains (22 blades with 45 sections 29 blades with 59 sections or less) 4.8mm suitable for small chain saws, used for 325 chains (32 blades 64 sections 36 blades 72 sections 38 blades 76 sections), 3 or 8 chains (33 blades 66 sections 34 blades 68 sections 36 blades 72 sections) 5.5mm suitable for chain saws, used for 404 chains (32 blades and 64 sections) Usage: Mainly used for polishing chain saws, but also suitable for polishing other metals, jade, glass, etc Package Contents: 30pcs in total (3 sizes - 5 or 32inch, 3 or 16inch, 7 or 32inch 4.0mm, 4.8mm, 5.5mm) 10pcs for each size Only the above package content, other products are not included. Note: Light reflection 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.