LUCKUT Grinding Wheels Grinding Discs 4-1/2'' x 1/4'' x 7/8'' Grinder Wheel Center Metal Aggressive Grinding for Angle Grinders-5 Pack: Amazon.com: Industrial & Scientific
4.5" x 36 Grit x 7/8" Type 29 Flap Disc Zirconia Angle Grinder Sanding Disc
DIABLO 4-1/2 in. 40-Grit Steel Demon Corner-Edge Grinding and Polishing Flap Disc with Type 29 Conical Design DCC045040N01F - The Home Depot