1.Type:Felt wheels/bobs 2.Material:diamond,sand paper,felt bobs,etc 3.Size:3mm/6mm(shank diameter) 4.Color:red,white,blue,etc Felt wheels/bobsFeatures:1.Type:Felt wheels/bobs2.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. Felt wheels