Features: *PH2 Screwdriver Bits For Drywall Screws *Automatically Sets Screws To Proper Depth In Drywall *Suitable for plasterboard screws locating and as drywall dimpler bits, *Can match with any power drill and cordless drill *Depth stop design can limit screw penetration and damage to board, *More useful and easier to install the drywall screws, good decoration tools *Shock resistant tool steel for maximum durability hardened core for extra strength & reduced breakage, *Heat treated to resist breakage, to control depth of screw during driving applications Specifications: *Material: Chromium vanadium steel *Type: PH2 *Shank Diameter: 1/4" (Approx.) *Total Length: 50mm (Approx.) *Application: Plasterboard/Drywall Screws Installation, etc. Package Contents: 1*Screwdriver Bits