4-1/2" Type 27 Aluminum Oxide Depressed Center Wheels 7/8" Arbor 1/4"-Thick 13580 Max. Rpm

This depressed center wheel has a very course grade with 24 grit for use with soft and mild steels. The maximum RPM is 13,580. It has a 4-1/2" diameter x 1/4" thickness, with a mounting hole for a 7/8" arbor.