Specification: 1.ST0102 Diamond Double Row Cup Wheel 2.size:4",5",7" 3.double row 4.cup wheel We have the following workshops: 1. Workshop ... discs, diamond grinding discs, diamond resin grinding wheels, etc. 2. Workshop 2: tungsten carbide burrs: inch size and metric size, all standard ... DIY tools to Japan, Germany, the USA and Australia Diamond Double Row Cup Wheel 4",5",7"