1/2" Drive Advanced Hex Driver 13mm

• Replaces standard hex tools                                                                              
• Patented and unique bi-directional design enables loosening & tightening of new and damaged hex fasteners
• R.P.T. Technology prevents rounding of new and compromised fasteners
• R.P.T. Technology provides up to 50% more torque on NEW fasteners
• R.P.T. Technology provides up to 400% more torque on damaged fasteners
• S2 steel for increased strength and durability
• Oversized roll stamped, and ink filled size markings for greater visibility