One of the main steps in the Rubber Manufacturer's Association tire repair procedure for pneumatic tires is to make sure the tire injury has been cleaned out in preparation for a plug stem or plug stem patch. The STEELMAN 18240 1/8-Inch Carbide Double Cut Burr for Tire Repair Dressing is designed for that specific step of tire repair. When used with the STEELMAN SLP9213 3/8-Inch adapter and fitted to a low speed tire buffer tool it allows you to create a clean, smooth, and uniform repair channel through tire rubber and the embedded steel belts without the risk of friction scorching that could further weaken the tire. The double cut design allows this cutter to remove material on both the insertion and removal parts of each stroke speeding up total repair time. The durable carbide steel bur features flats along the shaft ensure that when fitted into the adapter, the set screw has secure purchase and will keep the bur from being seized by the tire material and ceasing to turn.