Description This corded or cordless powered 1/4 shank driver inserts kit fits most drill bits suitable for driving hex screws. An Allen socket without magnetic. Bit specifications include 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, 13mm. It is made from chrome-vanadium steel with long life and high durability. Simply on the screwdriver handle to install. Most used in DIY home repair, woodworking, car parts, professional machine, etc. Features - Color: As pictured. - Material: Chrome Vanadium Steel >- Packaging dimensions: 12.5 x 11.5 x 2 cm. - Inner hole diameter: 0.6 mm Package including 9 x hexagon bits