The Forney 70730 #1 x 1" square recess insert bit, 10-pack. Insert bit designed to be used with screwdriver-type hand tools. Manufactured from S2 modified tool steel and heat treated to 58-62RC. Bits are tested during the manufacturing process for gauge fit, tolerance and specification accuracy. Torque tested at final stages to 120-150% above ANSI standards. Forney Industries is one of America's longest operating family-owned metal working product companies. Founded in 1932, Forney offers more than 5,000 products for the hardware, automotive, farm & ranch and do-it-yourself markets. If you've got metal working questions, we've got answers. Were committed to your success regardless of location size or needs. #1-by-1-Inch (25.4mm) insert bit, 10-pack. Claims for warranty must be made within 90 days of the date of purchase. Proof of purchase required. This warranty does not cover any product that has been subject to misuse, neglect, negligence or accident, or that has been used in any way contrary to the purpose intended.