[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 fix 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 hold the screw. It fits 1 or 4 inch Phillips drill bits. It can drive the plasterboard screw quickly and accurately. [Specifications] The 1 or 4" hexagonal handle can be easily loaded into electric screwdriver, drill bits and hand screwdrivers. The package includes: 2 screwdriver bit holders and 2 drywall bits [Wide range of use] Suitable for deck construction, drywall, particle board or plywood, wood framing, installation of plywood subfloors, etc. Ideal as a daily tool suitable for indoors and outdoors. Quantity delivered: 2 sets Product color: red, silver Product specifications: as shown in the picture. Welcome to meet