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 Torx Driver Sockets Finish: Full Polish Chrome Holder, Black Oxide Bit Drive Tang Size (Inch): 1/4 Fastener Size: T10 Drive Type: Torx Bit Dimension A: Drive End (Inch): 0.500 Dimension B: Nose Diameter: 0.500 Dimension C: Overall Length (Inch): 1.500 Dimension D: Bit Length: 1.000 Exposed Bit Length: .641 Replacement Bit: 94-170 ASME Specification: US Federal Specification: Length Format: Standard SAE/Metric: Torx Replaceable Bit?: Yes.