This is a beefed up version of the Traveler vise.The Saltwater model will work with hooks from #4 to #8/0. High function comes from this vise’s True Rotary feature, cam operated jaws, the included adjustable bobbin cradle, material clip and a spinning attachment. If small trout flies aren’t your game and you need a vise to hold the big stuff, this is the fly tying vise for you. Made in the USA.