... .07.5 4″100164.011 4″100164.011Application: granite, marble. Used on right angle grinder.Grit: coarse for hard granite, medium ... for softer granite, fine for smooth finish.Segment shape: straight turbo, curved turbo, single row, double row.Connection: M14, M16, 5/8 ... "-5/8".Advantage: well-balanced, aggressive, fast and affordable diamond turbo cup pad for grinding hard stones