Are tension tools giving you the slip? There are few things more frustrating than picking a lock down to the last pin, only to have the tension tool slip or jump out of the plug to test the patience (and polite vocabulary) of the calmest locksmith. Well, your hair-pulling days are over! Peterson's Serrated Tension Tools ease the tension for many security professionals. The serrated teeth on our innovative design provide a locking grip between your tension tool and the key way. Made from government steel and preformed to the perfect angle, they never need to be reshaped. Our three-piece set gives you the foot size and serration options to use in any location on any keyway. Once you try them, you will agree that these cutting edge tools are another Peterson product you will never want to be without!