Chrome finish drive end. Chamfered drive end. Black oxide finish bit end. Hardened for extra strength.
From the Manufacturer
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: 1/4-Inch Drive Standard Length Hex Driver Sockets Finish: Full Polish Chrome Holder, Black Oxide Bit Drive Tang Size (Inch): 1/4 Fastener Size: 5 Drive Type: Hex Bit Dimension A: Drive End (Inch): 0.500 Dimension B: Nose Diameter: 0.500 Dimension C: Overall Length (Inch): 1.874 Dimension D: Bit Length: 1.311 Exposed Bit Length: 1.000 Replacement Bit: 94-389 ASME Specification: US Federal Specification: Length Format: Standard SAE/Metric: Metric Replaceable Bit?: Yes.