Weiler crimped wire Bore-Rx, brushes are designed for automated use in CNC machining centers and dedicated equipment. They are densely filled for high aggression and long tool life and feature a 3/8 in diameter steel stem with a flat for use in a collet or end mill holder. Bore-Rx, brushes are ideal tools for removing burrs from internal edges. Since they can eliminate manual deburring operations, these internal brushing tools help to improve part to part consistency and reduce direct labor costs. Bore-Rx, brushes are available in sizes ranging from 3/4 to 4 in Dia and they are designed to be interpolated within bore sizes that are larger than the brush diameter.