The professional front sight adjuster. Handy carrying case doubles as a T-Handle to adjust sites without stress on your hand. Reversible for 4 or 5 pin use. Carrying case comes with lanyard hole as well as positive locking cover for worry free carry. Case has 10MM hex wrench design for difficult adjustments. Longer and stronger than most tools on the market. Fits troy industry H&K and other front sights that seat deeper in the housing