45Pcs Chain Saw Blade Shaperener Set
Shank Diameter: 3 mm
Total Length: 1.77
Material:Made of titanium-coated emery
3 sizes Grinding Head Diameter: 5/32(4.0 mm), 3/16(4.8 mm), 7/32(5.5 mm).Each size is 15Pcs; Different size meet your diverse needs.
Note: there may be black spots on the surface. Its not the coating came off, but titanium and silicon carbide mixed. It is for the better using.