The Weiler 56490 mandrel securely mounts a Type 1 cutoff wheel with a 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 mandrel consists of a shank and a screw. The shank inserts into a grinder chuck. The arbor end of the shank accepts a cutoff wheel, and the screw portion of the mandrel threads into the shank, securing the wheel to the mandrel.

Merit Abrasives manufactures abrasives for the deburring and finishing industries. Merit, founded in 1945 and headquartered in Cleveland, OH, meets International Organization for Standardization (ISO) standards 9000 and 14001.