[Durable] The hex shank screwdriver bit holder is made of chrome vanadium steel, high hardness, rust and corrosion resistance, strong and durable. The magnetic tip effectively keeps the screw straight. [Adjustable] Our screwdriver bit holders are height adjustable. Magnetic screwdriver bits can set screws at a predetermined depth, allowing precise work with drywall screws. [Function] The strong magnetic tip can fix the drill bit, which is convenient for picking up and holding the screw. It fits 1/4 inch Phillips drill bits. It can drive the plasterboard screw quickly and accurately. [Specifications] The 1/4" hex handle can be easily loaded into electric screwdriver, drill bits and hand screwdrivers. Package includes: 2 screwdriver bit holders and 2 Phillips drywall bits. [Wide range of [use] Suitable for deck construction, drywall, chipboard or plywood, timber framing, plywood subfloor installation, etc. Ideal as a daily tool suitable for indoor and outdoor use. Feature: --The impact screwdriver bit holder can fix the gypsum board drill bit and drive the gypsum board screw quickly and accurately --The strong magnetic shank and 1/4 hex shank. make it easier to hold the screw and connect the drill bit stably --This screwdriver bit can adjust the depth, which helps keep the screw straight and has high stability. x 14 mm Hex shank: 6.35 mm (1/4") Fir for: 1/4" Shank dirver bit Package included: 2 x screwdriver bit holders 2 x PH2 screwdriver bits