Accurate Positioning - 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! Limit The Screw Depth - Magnetic collar design limits the penetration of screws to the board and prevents damage to walls or boards by twisting screws overly. Make your work hassle-free. Magnetic & Non-slip - The magnetic and non-slip design allows the screw to attach to the bit without falling off, making your work easier and effortless. Strong and Durable - Made of strong chromium vanadium steel, which is wear resistant, durable and with high hardness. Suitable for gypsum board, woodworking board, dry wall and more. Wide Compatibility - Widely compatible with electric screwdrivers, manual screwdrivers, electric drills, hand drills, etc., for easy screw installation and removal. Suitable for maintenance and installation of equipment in home furnishing industry. Get these Magnetic Positioning Screwdriver Bits which will help you fix and twist the screw accurately, and limit the penetration depth of screw in order to protect walls.This screw setter is made of shock resistant tool steel for maximum durability and it is ideal for controlling the depth of screw during driving applications in drywall, particle board or plywood.No messy work anymore! Making your work more efficient and effortless! SPECIFICTIONSMaterial: Chrome Vanadium SteelSize: 25x15mm, 50x15mmInterface to Electric Drill/ Screwdriver: 6.35mm/0.25” Hexagon ShankPackage Includes:5pcs x 25mm Bits5pcs x 50mm Bits3pcs x 50mm Bits + 2pcs x 25mm