Pferd Ring Wheel Arbors for Die Grinders | Metal Fabrication Supplies
Osborn 1113250072 Cutting/Cut-Off Disc with Threaded Arbor, T27, 4-1/2" x 0.045" x 5/8"-11, A 60, Aluminum Oxide, 13280 rpm, 4.5" Diameter, 4.5" Type (Pack of 10): Amazon.com: Industrial & Scientific
25PCS 3 inch Cut Off Wheels 3/8" Arbor Metal Cutting Disc Die Grinder Blade Tool | eBay
DEWALT 4-in Diamond Arbor Grit Grinding Wheel in the Abrasive Wheels department at Lowes.com