Item Type: Screwdriver Bit Material: Alloy steel Length: Approx. 65mm or 2.56in, 110mm or 4.33in Use: Applicable to air switch screw and switch socket screw.12 Screwdriver Bits: There are a cross screwdriver bit and a FPH2 screwdriver bit in this set, which will better satisfy your working needs. 2Better Work Safety: Standard 6. 35mm hex shank ensures perfect fit to power tools, while the insulated sheath enables good electrical safety. 3Great Alloy Steel: Adopting premium alloy steel material with a sturdy structure, not likely to deform and durable for long term use. 4Extensive in Using: Widely applicable to air switch screw, switch socket screw and so on, suitable for repair, maintenance, assembly, etc. 5Simpler to Install: Comes with a compact size and a light weight as well, all the 2pcs screwdriver bit can be easily installed in minutes. 2 xScrewdriver Bit