Diamond Taper Cup Grinding Wheel 534A 100 10.0 2.0 D126 Hkp75C 31.759534A-Code, 100-Diameter,10.0-Diamond Coating Width 2.0Diamond Coating Thickness D126-Grade Hkp75C-C Oncentration 31.75-Internal Diameter Or Bore Dia. Make : Carborundum,Grindwell, Norton,B Osch, Wendt [ Warranty Period: 12 Months After The Date Of Delivery ] ]