Shank Diameter: 6.35mm Shank Length: 2.2cm. NOTES: Without magnet! High Hardness and Quality: The socket wrench bit is made of industrial grade chrome vanadium steel with high hardness after being forged and quenched at high temperature. Sans aimant! Haute duret et qualit: L'embout de cl douille est fabriqu en acier au chrome vanadium de qualit industrielle avec une duret leve aprs avoir t forg et tremp haute temprature. The surface has been sandblasted for durability against corrosion and rust. Various Sizes: The hex screwdriver set includes different sizes to meet your needs. Power Nut Screwdriver Bits (SAE): 3/16, 1/4, 9/32, 5/16, 11/32, 3/8, 7/16 inch; Power Nut Screwdriver Bits (Metric): 5mm 5.5mm 6mm 7mm 8mm 10mm 12mm Wide Application: The hex screwdriver bit fits any electric drill or drill chuck, such as: air drill, electric drill, hand screwdriver, power drill. Widely used in auto parts, woodworking, DIY, machine repair and maintenance. Easy to Store and Carry: The screwdriver bit set comes with a storage organizer, each driver bit nests against the organizer. Size marking on the organizer and socket wrench, easy to find. Small footprint, easy to carry and put in your pocket. Specifications: Material: Chrome vanadium steel. Shank length: 22mm Shank diameter: 6.35mm (1/4 inch). Socket diameter: SAE (7pcs): 3/16, 1/4, 9/32, 5/16, 11/32, 3/8, 7/16. Metric (7pcs): 5, 5.5, 6, 7, 8, 10, 12mm Package: 1 * 14pcs Power Nuts Screwdriver Set . Note: This does not include other items, the color is based on the first picture, and the other pictures only show the effect Due to the difference between different monitors, the picture may not reflect the actual color of the item. Due to manual measurement. Please allow some deviation. Thank you!