Nonwoven grinding wheel Diameter: 4, 5, 6, 8, 10, 12 and 14 inches Thickness: 0.5 and 1 inches Grit: 100 to 600 Hardness: 3, 5, 7, 9, 12, 14 and 16p Specifications: 10 x 10mm Colors: white, red, grey, black brown and blue