7" x 7/8" P120 4 slits extending from the center hole, to facilite disc removal - P120 - 120 grit - P graded which provides more uniform finish than traditional Cami graded products - Sharp Silicon Carbide grain cuts fast while minimizing heat - Design for use on Glass, Mirror and Stone - Full resin on resin bond holds up to heat and moisture - 100% polyester waterproof Y weight backing - Packed 50 discs per box. 10 boxes (500 discs) per case. - Manufacturer: Sungold.