Description Made of high quality steel (chrome-molybdenum) Unique hex opening on each end so that a single socket can accommodate two hex sizes Engineered specifically for use with impact tools, using the most up to date industrial specifications The extra thin wall design allows easy access to recessed wheel nuts where space is limited Due to the extra-thin wall design, this socket should only be used on wheel nuts where limited torque is applied. Each socket is thoroughly made with the correct balance of strength and durability and is tested to the highest specifications to deliver outstanding performance at the most competitive cost.