The Jaws swivel on two Ball Bearings, thereby binding the materials around the hook when it rotates - a new principle that makes it easier and faster to tie professional looking flies. Our vise can naturally be used for traditional tasks. The vise jaws hold hooks of all sizes completely immovable - the jaws are opened and closed using a cam arm. It can’t get any easier - or better. The jaws are made of top quality, perfectly tempered steel.