Adjustable and replacement:This screwdriver bit can be adjusted in depth and help keep the screw straight and more stable. The tip is magnetic enough to hold screws securely, and interchangeable bits also allow Torx / Flat / screws to be screwed in perfectly.Magnetic and stable.Strong magnet and 1/4 hex can the screws and connect the drill stably. Hold the screw so you can drill with one hand. No need to buy a drywall drill. Your current cordless drill will work great. This product makes dry wall installation faster and easy.Reduces shaking and is easy to use.Product descriptionSpecifications:: metalColour: silverSize: 60 x 15 mmHex : 6.35mm (1/4 inch)Suitable for: 1/4 inch shaft screwdriver bitCombine this for conversion and small jobs with the installation drill/screwdriver and offset head, and you can screw in screws near the odd corner while screwing straight and have more than enough force with low weight. The materials are solid and designed.Package Contents:2 x drywall bits with depth stop and ring magnet.2 x screwsOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.