Made in the USA - quality and availability. Bits are manufactured to the highest tolerances and specifications for Straightness, concentricity, and precise tip fit to the fastener. Bits are manufactured from high alloy steel using the most up-to-date manufacturing process and heat treat to prevent shattering and premature bit wear.
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: 3/8-Inch Drive Phillips Screwdriver Sockets Finish: Full Polish Chrome Holder, Black Oxide Bit Drive Tang Size (Inch): 3/8 Fastener Size: Phil. #4 Drive Type: Phillips Screwdriver Bit Dimension A: Drive End (Inch): 0.700 Dimension B: Nose Diameter: 0.700 Dimension C: Overall Length (Inch): 2.050 Dimension D: Bit Length: 1.400 Exposed Bit Length: Replacement Bit: 94-128 ASME Specification: US Federal Specification: GGG-W-001222 Length Format: Standard SAE/Metric: SAE Replaceable Bit?: Yes.