Superior Electric GA-3 mandrel securely mounts a cut-off wheel with a 1/4" or 3/8" arbor hole onto a grinder that accepts 1/4" stems. The mandrel is designed to fit 0.035"- to 1/4" thick cutoff wheels and is made of carbon steel for strength and extended tool life. The kit consists of a mandrel (shank) and an arbor (screw); the mandrel inserts into a grinder chuck and the arbor end accepts a cutoff wheel. The arbor holds the cutoff wheel in place securely. Use our GA-3 with your die grinder or power drill. Mandrel can be used in most drills and die grinders with a 1/4" chuck or larger. For use with cut-off wheels designed to cut through sheet metal, muffler clamps, hose clamps, rusted bolts, etc.