This 10 piece mini diamond wheel set has a 5 piece solid wheels: Dia: 1 1/2in., 1-1/8in., 1in., 5/8in., & 5/8in. And 5pc 8 Holed Wheels: - Dia: 1in., 7/8in., 7/8in., 3/4in., & 3/4in. They feature a shank size of 1/8in., and a grit of 200. Comes in a plastic storgae case with clear lid.