Rugged and : 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 5/32inch electric saws, 3/16inch small oil chain saw wheels, 7/32inch large 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 - 5/32inch, 3/16inch, 7/32inch (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 Shank diameter: 3mm Applicable tools: electric grinding machines, electric drills, and other electric tools 4.0mm suitable for electric chain saws, for 3/8 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), large 3/8 chains (33 blades 66 sections; 34 blades 68 sections; 36 blades 72 sections) 5.5mm suitable for large 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 - 5/32inch, 3/16inch, 7/32inch 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.