Description:1/2-inch drive , H5 hexagonal size.Made of premium chrome molybdenum steel for superior hardness and great rust resistant.Black phosphate finish to resist corrosion.Sockets designed with a pin hole for use with pin and O-ring systems for secure socket retention. (O-ring and dowel pin are inclusive.)Wide application in DIY hand-making, household maintenance, and most general repairs.A must-have addition to any electric power drill or impact driver.
