Diteq CTC-32 4" 60/80 Grit Continuous Turbo Cup Wheel D82004 Excellent choice for finishing of hard materials including granite, marble, tile, porcelain, refractory, light-duty masonry and concrete. SPECIFICATIONS: Cup Wheel Diameter4" Cup Wheel Arbor5/8"-11 Thread Drive PinNo Cup Wheel ColorRed Cup Wheel Grit60/80 Grit Cup Wheel StyleContinuous Rim Turbo Made InSouth Korea Diteq CTC-32 4" 60/80 Grit Continuous Turbo Cup Wheel D82004