Bosch FD2960080 6 In. 7/8 In. Arbor Type 29 80 Grit Blending/Grinding Abrasive Wheel  (Pack of 10) Designed for use with medium angle grinders Type 29 flexible wheel and flap disc For blending and stock removal on uneven surfaces Best used at a 10-degree angle Aluminum zirconium grain can be used for rugged stock removal