1) Rolled center bolt threads are designed for less effort when applying high torque.
2) Heat-Treated Tip
3) T-handle locks jaws precisely where you set them
4) Slim Tapered jaws allow for better gripping and easier access in tight spots
5) Safety Cage guides jaws for fast set-up, solid contact superior safety
6) Nut recessed to avoid mushrooming and disfiguring from impact
7) Leverage up front for positive grip, vise-like power and no slippage
8) Live center tip protector and optional bolt extender lock on center bolt for additional protection and added reach.