Drywall Screw Bits: 3pcs magnetic bit holder with 3pcs PH2 bits, can be used for drywall screws installation. Hex Shank: 1/4 inch; Interface: 1/4 inch. Length: 2.36 inch / 60mm. Screwdriver Bit Holder: Made of high quality Chrome vanadium() steel and aluminum for high hardness and long-lasting durability. Designed for any power drill or cordless drill. Adjustable Bit Holder: Depth stop design can effective limit screw penetration depth into drywall and avoid damage to board, more easy to install the drywall screws! Magnetic Tip: The strong ring magnet not only hold the bit tip securely, but also grab the screw tight enough for one-handed operation. Save your time and Imporve efficiency. Applications: Widely used for deck building, wood framing, installing plywood subfloor, building crates, drywall and many other applications that require quick change and precise drilling. Material: Metal colour: blue Package Contents: 3 x drill bit extension Only the above package content, other