- Loads are kept off the corners of the fastener which helps prevent fastener rounding
- Patented locking grooves help prevent the wrench from slipping off the fastener when turning
- Chrome-vanadium box ends and switch levers provide high strength and durability.
- Box end is countersunk for easy application to the fastener.
- Metric Spline wrenches can be used on metric 4, 6, 12 point, spline and Torx fasteners
- The high contact surface area which is away from fastener points enables turning of highly rounded fasteners
