Description This set of screwdriver bits 1/4 inch tools fits most powered corded or cordless drills to drive hex head screws. Strong inner hexagon sleeve without magnetic. The specifications of the bits inlcude 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, 13mm. It's made of chrome-vanadium steel with long life and great durability for use. Easy to install on the screwdriver handle. Widely used in household DIY, woodworking, auto parts, professional machine repairing, etc. Features - Color: As shown - Material: Chrome-vanadium steel - size: 25 x 6.35mm / 0.98 x 1/4 inch (L x Dia) - Made of chrome-vanadium steel with long life and great durability for use. Strong inner hexagon sleeve without magnetic. - This set of screwdriver bits 1/4 inch tools fits most powered corded or cordless drills to drive hex head screws. - The specifications of the bits inlcude 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, 13mm. - Wide application. Suitable for household DIY, woodworking, auto parts, professional machine repairing, etc.Package list: 1 x 9PCS 5-13mm Metric Socket Nut Impact Driver Adapter Drill Bits 1/4 Inch Hex Tool Set Nut Driver Socket Bit Set (5mm 6mm 7mm 8mm 9mm 10mm 11mm 12mm 13mm)