1.Type:Mount points 2.Material:diamond,sand paper,felt bobs,rubber,etc 3.Size:3mm/6mm(shank diameter) 4.Color:red,white,blue Diamond grinding wheel mount pointsFeatures:1.Type:Diamond grinding wheel mount point.2.Material:diamond,sand paper,felt bobs,rubber,etc3.Size:3mm/6mm(shank diameter)4.Color:red,white,blue,black,etc5.Complete in specification6.Various shapes and sizes.