The Blue Spot Tools 15pc 1/4in Hex Impact Nut Driver Set features a durable construction from heat-treated carbon steel, ensuring increased longevity under rigorous use. Designed specifically for impact drivers, this set boasts a 1/4in hex shank for efficient attachment and removal of fasteners.Precision-engineered heads provide a snug, secure fit on fasteners, significantly reducing the risk of slipping or stripping during operation. The set includes a versatile selection of sizes with 8 metric (6mm, 7mm, 8mm, 10mm, 11mm, 12mm, 13mm, 14mm) and 7 SAE (1/4in, 9/32in, 5/16in, 3/8in, 7/16in, 1/2in, 9/16in) drivers to accommodate a wide range of nuts and bolts.Key Features Manufactured from heat-treated carbon steel for superior durability Black phosphate coating enhances corrosion resistance Compact, organised carry case for easy transport and storage Includes 15 nut drivers (8 metric + 7 SAE sizes)* Precision-machined heads for non-slip gripWith its rugged design and practical organisation case, this set is an essential toolkit for professionals tackling demanding fastening tasks.