Dynamic Power 4X Thick .404 100mm Grinding Disc for 320W Chainsaw Sharpener*This item does not include chainsaw sharpener machine, disk only.This is a set of two vitrified grinding discs for our Dynamic Power 320W chainsaw sharpener.The grinding wheels are .404 Pitch, 100mm diameter 10mm arbour.Product Features:High-quality vitrified grinding disc.404 Pitch grinding disc set100mm diameter, 10mm arbourProduct Included:Chainsaw sharpener grinding disc x 4Product Specification:Brand: Dynamic PowerPitch: .404Grinding Disc Size: 100mm - 10mm ArbourWeight: 0.15Kg each