Since 1975, HMH vises have been giving tyers years of dependable service, longer than any other brand. The original HMH vise revolutionized fly tying vise design and function. It incorporated components precision-machined from the highest quality materials, and included design features never before found together in a fly tying vise, including 360-degree rotation, an exclusive disc drag rotary tension adjustment, and quick-change, hardened, interchangeable jaws. The individually-numbered Limited Edition Premium vise (now a collector's item) also incorporated an adjustable head angle so any hook could be set at the optimum level and angle.