Back Home / Tools and Equipment / Driver Bits / TORX BIT – STAR INSERT TORX BIT – STAR INSERT SKU: XTXB55 Categories: Driver Bits, Tools and Equipment Made from S-2 shock resistant steel. Industrial quality. Rc 60 hardness. Driver size: 55. 5/16″ hex drive. 1-1/4″ long. Made from S-2 shock resistant steel. Industrial quality. Rc 60 hardness. Driver size: 55. 5/16″ hex drive. 1-1/4″ long. Case Quantity: 1 Log In For Pricing