This deburr/chamfer tool features 3 replaceable tungsten cutting blades, is supplied with a 3/8"D quick chuck adaptor suitable for use with a cordless drill and covers all sizes of bolts, studs and threaded rod diameters from 6mm to 33mm. The tungsten carbide blades offer a smooth cut on a wide range of materials including stainless steel, hardened steel, mild steel and hard plastic. Ideal for repairing hammer-damaged, squashed or flattened threads, together with finishing the external edges of cut pipes and bars.