Armstrong 39-717 Standard Length Socket Driver Bit

Armstrong Socket Driver Bit, Standard Length, Measurement System: Metric, Hex Drive, 1/2 in Drive, Hex Bit, 12 mm Bit, 2.594 in Bit Length, 1.047 in Drive End Width, 3.661 in Overall Length, High Alloy Steel, Black Oxide/Polished Chrome

• 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
• Bits are retained in the bit holder by a set screw that locks securely into a groove on the bit for positive bit retention as well as simple, easy bit replacement