1.5mm to 12mm Hex Wrench Drill Bit Set S2 Steel 1/4in Shank Metric Screwdriver Bits Features： 1、Quantity and Size: Includes 10PCS bits of the most popular metric sizes, 1.5mm, 2mm, 2.5mm, 3mm, 4mm, 5mm, 6mm, 8mm, 10mm, 12mm. 2、Shank and Length: The size of the shank is 6.35mm/1/4in, and the length is 100mm (3.94in). After heat treatment, it is durable and not easy to wear. 3、Fine Workmanship: The bit head is made of S2 steel, and the surface is electroplated and rust proof, with good workmanship and high accuracy. 4、Function: The magnetic drill bit can easily fix the screw during installation, making your work easier and bringing you convenience. 5、Widely Used: 1/4 inch hex head hex wrench bit is suitable for electric drills with speed regulating device, electric screwdrivers, hand screwdrivers. Specification： Item Type: Hex Wrench Drill Bit Material: S2 alloy steel Bit Length: Approx. 100mm/3.94in Hex Size: H1.5, H2.0, H2.5, H3.0, H4.0, H5.0, H6.0, H8.0, H10, H12 Quantity: 10pcs Shank Diameter: Approx. 1/4 (6.35mm) Application: It can be used for universal tools such as electric screwdriver, manual screwdrivers, electric drill, and other tools. Package List： 10 x Hex Wrench Drill Bit 1 x Cutting Ferrule