The larger the value, the larger the head, and the smaller the value, the smaller the head. Buy 3pcs h2.5 hex head drill bit wrench 2.5mm flat tip 1/4" shank 75mm long magnetic at , get more hex bits in various size The hexagonal head of the screw driver is magnetized for easy use. Features - The hexagonal head of the screw driver is magnetized for easy use. Precision CNC machined hex head, precise appearance, reduces head wear during high-intensity tightening operations. Make sure the hex bit is firmly inserted into the power tool chuck before operation. Special torque buffer design, when the vibration generated during operation is absorbed by this part, the torque transmission is increased, achieving the effect of protecting the screwdriver head and extending the service life. Can accurately tighten screws without damaging screws and hex bit socket. Size - Metric flat hex head size: H2., 5 (2., 5mm); hex shank size: 1/4; overall length: 200mm (8); hardness: HRC59-61 (The recognized stable hardness is around HRC60., ). Industrial grade hex flat tip screwdriver bit is made from specially heat-treated S2 steel for superior strength, hardness and durability, with a sandblasted surface for a textured effect for enhanced grip and corrosion resistance. DASAW-2pcs Hex Head Wrench Drill Bit 2.5mm H2.5 Metric 1/4 Hex Shank 110mm 4 3 Long Magnetic S2 Steel Screwdriver Bits Industrial Grade Hexagon Flat C6dbaf35 6eb2 4e13 B1d5 07225543923d.4f0ab71e8fb263b3c3ed934dc5b158df 1/4 drive hex shank bits can be used with electric screwdrivers, manual screwdrivers, electric drills, etc. Features - The screw driver hex head of the screwdriver is magnetic and easy to use. It can absorb screws stably vertically or tilted, making it easy to fix... Avoid using excessive force when tightening the screws to prevent the bit from being damaged or slipping out. 2pcs H2 T-Handle Hex Key Wrench 2mm S2 Steel T-Key Inner Hexagon Applications - Hex drill bit wrench specifically designed for driving screws into wood, metal, and other materials effortlessly.