1.Diameter is 7 inch(180mm), hole size is 5/8-11 arbor hole
2.Material is high quality diamond powder, steel body,20 pieces diamond segments
3.Appication is for concrete,marble,granite, and other construction material grinding
4.Grit is #30, segment size is 30*8*8mm
5.Very sharp, long using life, suitable machine is angle grinder.