Torx Head Size: T45Hex Shank Size: 1/4"Overall Length: 100mm / 4"Rod Diameter: 8mm / 0.31"Special Design: Torx Head without HoleHardness: HRC59-61 (Recognized stable hardness is around HRC60.)Color: GrayPackage Content: 3pcs x Torx Head Screwdriver BitIndustrial grade torx head drill 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.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.