Specially toughened steel and micro-processor controlled heat treatment ensures tough bits with long life · · · Specially toughened steel · · Micro-processor controlled heat treatment ensures tough bits with long life · · Dewalt chisels always deliver the best solution even in the most difficult applications · · Width: 20 mm · · Length: 250 mm · · Specially toughened steel and micro-processor controlled heat treatment ensures tough bits with long life