3M 1989 3" x 1/32" x 3/8" Green Corps Cut-off Wheels - 5 Pack 3M's highest performing, longest lasting wheel used for cutting sheet metal, frame rails, clamps and rusted bolts Constructed with premium grade abrasives, these wheels out-cut and out-last general purpose wheels Center hole diameter: 3/8" Color: green Thickness: 1/32"