413Q | Dimensions 9″ x 11″ | Grit 320 | 50 Discs Per Pack Silicon carbide mineral provides an aggressive cut and a consistent, fine finish. Light, A-weight paper backing offers excellent flexibility in hands-on applications. Resin bonding resists deterioration from heat, extending the life of the abrasive cloth. Waterproof material allows for easy debris removal. Can be easily cut and folded to fit any hand tool or workpiece crevice.