Features: new and Discover the convenience of our 10piece Gypsum Board Bits Set, featuring a powerful magnetic holder for secure screwdriving. Strong magnetic gypsum board positioning screwdriver, suitable for screwing self tapping screws on softer materials such as gypsum board and woodworking board. Widely applicable, suitable for screwing self tapping screws on softer materials such as gypsum board and woodworking board, with a limit to prevent penetration caused by excessive screwing. Durable, high precisions concentrics shafts, straight and concentrics, not easy to shake, not easy to slip and wear, and more durable when used. Strong magnetic design, magnetic treatments on the head, and built in magneticcoil in the batch head can firmly adsorb screws during use to improve work efficiency. Specifications: Material: Carbon Steel Specification: 25mm, 50mm(optional) Package Includes: 10Pcs Plasterboard Bits note: Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you.