The Lenox 4-1/2 in. Metalmax Cut-Off Wheel delivers 1,000 or more cuts with no need for wheel changes, which is a 30 times longer life than thin bonded cut-off wheels. The heavy-duty cut-off wheel features advanced diamond technology that provides extreme durability in metal cutting applications, leading to increased productivity, reduced downtime, and lower cost per cut compared to thin bonded cut-off wheels. This cut-off wheel also includes less odor and dust residue, as the wheel does not wear down like bonded abrasives and the sparks originate only from the material being cut.30 Day Money Back Guarantee