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
amoolo 4 1/2 Inch Flap Disc, 10PCS-60 Grit Angle Grinder Sanding Discs, High Density Abrasive Grinding Wheels Type 29 for Metal/Wood Grinding (7/8 inch Arbor Size) - Amazon.com