Features High Quality: The hexagon socket head screw bit set is made of high-grade S2 tool steel, with high hardness, impact resistance, not easy to break, and long service life Magnetic Adsorption: Hex head allen wrench screwdriver bit set is magnetic, easy to suck the screw, prevent it from falling during installation, easy to use Clear Imprint: Allen hexagon screwdriver bit sets are marked with corresponding sizes, which are clearly visible, so that you can easily get the bits you need, which is convenient and fast Two Specifications: The hexagon socket screwdriver bit set contains two specifications of metric and inch bits, you can choose according to your needs, which is convenient for your work Compatible: Allen screwdriver bit set is a universal 1/4 inch hex shank, which is perfectly matched with electric drills, hand drills, electric screwdrivers, etc. Specification: Item Type: Hex Head Bit Material: S2, chromed surface Shank: 1/4 inch hex shank Bit Size: 1.5mm,2mm,2.5mm,3mm,4mm,5mm,6mm,8mm,10mm,12mm 5/64,3/32,7/64,1/8,9/64,5/32,3/16,7/32,1/4,5/16inch Weight: Approx 300g/10.6oz Package List: 10 x Imperial Bit 10 x Metric Bit Package List 10 x Imperial Bit 10 x Metric Bit