The MILWAUKEE® Lineman's 4in1 Ratcheting Insulated Box Wrench is 1000V UL Classified. Durable forged steel construction delivers longer tool life. The ratcheting wrench's ergonomic handle is designed for comfortable use while wearing gloves and still allows for easy storage. High contrast size markings make identifying size easier. The box wrench features twelve point sockets that fit 1/2", 9/16", 5/8" and 3/4" hardware.