The Renzetti is our favorite tube fly tying vise. It comes with 3 different diameter mandrels (1/16″, 1/32″ and 1/8″) that allow you tie different sized tubes and it can accomodate tubes up to 4″ in length. This vise holds tubes solidly and is very well designed. It features all the benefits of a rotary vise and a simple tension adjuster lets you easily control the rotation. It is constructed of anodized aluminum with a powder coated c-clamp.