Power bit, Designed for use with square recess screws, Heat treated to resist breakage and wear, Shock resistant tool steel for maximum durability, Hardened core for extra strength and reduced breakage, Specially designed to reduce stripping, 1"" length, #1 Square Recess, 2 per card, Length: 5, 75, Width: 1, 87, Height: 1, 34 SKU: JNSN61530