It can remove stock fast on a variety of materials-marble,lime stone,black,concrete,terrazzo. It can remove stock fast on a variety of materials-marble,lime stone,black,concrete,terrazzo. Diamond Cup Grinding Wheels ------- Double Row grinding for marble or stone cold pressed modelouter DiaArborsegment numberCPC-DRGW1004"16/20/22.2314CPC-DRGW1154-1/2"20/22.2316CPC-DRGW1255"20/22.2318CPC-DRGW1807" ...