Outstanding lifespan in metal. No chipping, no odor emissions, no expiration date. Cutting metals like steel and cast iron has always been challenging for angle grinder discs. Many workers are familiar with the chemical smell of bonded discs that literally burn away while cutting. With the Expert Diamond Metal Wheel, that smell is a thing of the past—just like regular trips to the store to buy new metal discs. For craftsmen and construction workers who no longer want to spend money on bonded discs, the large Bosch Expert Diamond Metal Wheel angle grinder cutting disc offers a completely new way to cut metal. Extremely durable cutting edge with Bosch Diamond Technology.