Our Linemans 4in1 Ratcheting Insulated Box Wrench is 1000V UL Classified. Durable forged steel construction gives your tool longer life. The ratcheting wrenchs ergonomic handle is designed to provide you with comfortable use while wearing gloves and still allows for easy storage. High contrast size markings let you identify size easier. The box wrench features twelve point sockets that fit 1/2 in., 9/16 in., 5/8 in. and 3/4 in. hardware.