Check the listing for details. 2pcs TT27 Torx Head Screwdriver Bit 1/4" Hex Shank 3" Magnetic with Hole Tip. Condition: New. Listed at 14.73 USD. Industrial grade torx head drill bit is made from specially heat-treated S2 steel for superior strength, hardness and durability, with a chrome-plated surface for a smooth, polished finish that enhances wear resistance, rust protection and easy chip removal.The tamper proof 6 point star head of the screw driver is magnetized for easy use. Torx head driver with magnetism can stably absorb the screw vertically or obliquely, making it easy to fix the screw, especially in a small space. Precision CNC machined torx head, precise appearance, reduces head wear during high-intensity tightening operations.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.