Armstrong Industrial Hand Tools have a heritage of Made in the USA since four brothers founded the company in 1890. This Armstrong brand product is built from premium materials and workmanship ensuring unequalled strength, toughness, and durability. Product Type: 1/2-Inch Drive 6 Point Standard Length SAE Impact Sockets Finish: Black Oxide Drive Tang Size (Inch): 1/2 Fastener Size: 1/2 Drive Type: 6 Point Dimension A: Drive End (Inch): 0.957 Dimension B: Wrench End (Inch): 0.787 Dimension C: Overall Length (Inch): 1.496 Dimension D: Bolt Clearance (Inch): 0.472 Dimension E: Wrench Depth (Inch): 0.276 Dimension F: Length to Shoulder (Inch): 0.472 ASME Specification: B107.2-2002 US Federal Specification: GGG-W-660a Length Format: Standard SAE/Metric: SAE.