Right angle teeth grip in all directions for maximum bite and minimum wear. Patented undercut tongue and groove design assures, no slip jaw action. Patented reinforcing edge minimizes stress breakage. Patented PermaLock fastener eliminates nut and bolt failures. Laser-hardened teeth provide longer life. Grips have a Santoprene core with TPR-rubber overmold which composites for durability, comfort, and secure grip. New Code Blue designation on handles makes it easier than ever to choose the right tool for the job.