3/8" Dr 6Pt, PINLESS Universal Impact Socket, 1/2" Pinless 4-lug design for increased strength resulting in extended socket life. True 360 degree movement extends traditional range of motion resulting in a maximum 30 degree operating angle for increased access to restricted fasteners. Socket wall dimensions are optimized to provide strength while retaining access to restricted fasteners. Manufactured from chrome molybdenum alloy steel (Cr-Mo) for exceptional strength and durability. Surface drive™ technology reduces fastener rounding. Hard stamped size markings for long identification life. Meets or exceeds ASME B107.110-2012. Made in USA Yes. SAE/Metric/Torx SAE. ASME Specification B107.110-2012. Fastener Size 1/2 in. Drive Type 6 Point. Drive Tang Size 3/8 in. Length Format Standard. Dim. A: Drive End 0.969 in. Dim. C: Overall Length 2.188 in. Dim. D: Bolt Clearance 0.500 in. Dim. E: Wrench Depth 0.500 in. Dim. B: Wrench End 0.750 in. Finish Black Oxide 84422