Features: These bits help you fix the screw exactly in place without worrying about wobbling or misdirection. Speed up the process of twisting screws so you can work more efficiently and easily! Magnetic collar design limits the penetration of screws to the board and prevents damage to walls or boards by twisting screws overly. The magnetic and nonslip design allows the screw to attach to the bit without falling, making your work easy Made of steel, which is wear resistant, durable and with high hardness. Suitable for gypsum board, woodworking board, dry wall and more. Suitable for electric screwdrivers, manual screwdrivers, electric drills, hand drills., for easy screw installation and removal. Suitable for maintenance and installation of equipment for home furnishing industry Specifications: Component:Metal Length:Approx.50mm/1.96inch Package Includes: 5Pcs note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.