100% Brand New And High QualityShape: CylindricalDiameter:4mm (suitable for chainsaw small 8 chains)4.8mm (suitable for small chain saw 325, large 8 chain)5mm (suitable for large chain saw 404 chain)Shank Diameter: 3mmMaterial: Chrome steel jadeSuitable for: Electric grinder, lithium electric grinderMesh Number: about 120-150 meshProduct Usage:It is mostly used for grinding chainsaw chains, and also suitable for grinding and polishing jade.mill. After polishing, the jade carving workpiece is finely ground and the machining accuracy and efficiency are farHigher than traditional oilstone polishingPackage Included:Grinding Wheel Grinding HeadNote:1. Due to the different monitor and lighting effect, the actual color of the item may be slightly different from the color shown on the pictures.2. Please allow 1-3cm error due to manual measurement. (1 inch = 2.54 cm)Thanks for your support :)