Diamond scaife with spindle impregnated has tow type of quality. It has tow grain type dsws01(finish polishing for small stone)&dsws02(bloking&larger stone). Dsws01 - is medium grain it is for general uses and all kinds of small makeables top & bottom dsws02 - is big grain for makebles larger than 0.5 ct especially table polishing & bottom blocking and polishing diamond layer of 30 mm standard (optional), and depth 2.25 mm diameter 310 mm. Flat pulley v pulley diameter 330 mm. Flat pulley v pulley additional information: item code: