SUPERTORQUE lobular openings for greater turning power without deforming the fastenerDesigned for maximum engagement on 6 point fastenersSuitable for use with pneumatic and electric impact wrenchesSpecially heat-treated for impact use to provide long life, safety, and durabilitySpecification: Drive size: 1/2 inFinish/coating: BlackMeasurement system: ImperialShaft style: Standard StraightSocket points: 6 PTOverall length: 2 inSocket size: 1-1/2 in