1/4'' Torx Power Drive Bits Apex TX40  - Pack of 3

Driver Size: T-40

Major Diameter: 0.260

Body Diameter (in./mm): .309/ 7.8mm

Overall Length (in./mm): 1 15/16'' 49mm

Fasteners are becoming extremely common in automotive repair and appliance assembly. By design, Torx head screws resist cam-out better than Phillips head or Slotted head screws. Where Phillips heads were designed to cause the driver to cam-out, to prevent over tightening, Torx heads were designed to prevent cam-out.