Dynamic Power 4X Thin .325 145mm Grinding Disc for 350W Chainsaw Sharpener*This item does not include chainsaw sharpener machine, disk only.This is a set of four vitrified grinding discs for our Dynamic Power 350W chainsaw sharpener.The grinding wheels are .325 Pitch, 145mm diameter 22.3mm arbour.Product Features:High quality vitrified grinding disc.325 Pitch grinding disc set145mm diameter, 22.3mm arbourProduct Included:Chainsaw Sharpener Grinding Disc x4Product Specification:Brand: Dynamic PowerPitch: .325Grinding Disc Size: 145mm - 22.3mm ArbourWeight: 0.2Kg each