amoolo 4.5 Inch Flap Discs, 10PCS-80 Grit Angle Grinder Sanding Discs, High Density Abrasive Grinding Wheels Type 29 for Metal/Wood Grinding (7/8 inch Arbor Size) - Amazon.com
DIABLO 4-1/2 in. x 5/8 in. 50-Grit Grinder/Sander Conversion Kit DCP045VGPS01G - The Home Depot