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 holds the screw straight. Adjustable: Our screwdriver bit holders are height adjustable. The magnetic drill bits can secure screws at a predetermined depth, allowing precise work with drywall screws. Features: The powerful magnetic tip can fix the drill bit, making it easy to pick up and hold the screw. It is suitable for 1/4 inch Phillips drills. It can drive drywall screws quickly and accurately. Specifications: The 1/4" hex handle can be easily inserted into electric screwdrivers, drills, and handheld screwdrivers. Package includes: 2 x screwdriver bit holders and 2 x Phillips drywall bits. Widely used: Suitable for decking, drywall, particleboard or plywood, wood framing, plywood subfloor installation, etc. Excellent as a daily tool for indoor and outdoor use.