Tube flies are gaining so much popularity for saltwater, steelhead/salmon, and even trout. The Renzetti Tube Fly Vise is specifically for tying tube flies. It comes standard with a 1/16-inch diameter mandrel that fits the larger sized "Cut to Length Plastic Tube Fly Blanks" that we sell. Most of the others tubes we sell will require the 1/32-inch mandrel which is listed below as an option. The vise has smooth adjustable rotation, quickly allows you to insert and remove tubes, and holds the tubes firmly in place while you are tying. Accommodates tubes up to 4-inches in length. The Tube Fly Vise head will also fit onto the stem of the Renzetti Traveler Series of vises and can be ordered separately if you want to use your existing Traveler vise and just change the heads. Mandrels also come in 1/8-inch diameter in standard length of a longer model for tubes up to 9-inches long. Contact us directly for getting you any of those options.