Aluminium Oxide Velcro Discs Grit: P36-P1200 Hole: 1,4,5,6 ... .0"X22MM 180MM/7.0"X22MM 230MM/9.0"X22MM Aluminium Oxide Velcro Discs Application:-- Suitable for hook & loop salver and self ... precision polish of inner hole and flex tube-- Ideal for polishing and grinding the automobile surface coating, woodwork lacquer, painting, ... 4", 4.5", 5", 6", 7", 9"Grit: P36-P1200 Aluminium Oxide Velcro Disc