DIABLO 4-1/2 in. x 1/4 in. x 7/8 in. Masonry Grinding Disc with Type 27 Depressed Center DBD045250701C - The Home Depot
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
Milwaukee 4-1/2 in. x 1/4 in. x 5/8-11 in. Grinding Wheel (Type 27) 49-94-4515 - The Home Depot
4-1/2 in. x 7/8 in. 36-Grit Type 27 Flap Disc with Fiberglass Backing and Aluminum oxide Grain
2" Roloc Sanding and Grinding Discs for Die Grinders
3"×1/6"×2/5" Grinding Wheels Metal Sanding Disc For Angle Grinder 1/2/5/10Pcs | eBay