Renzetti Tube Fly Vise – Pedestal Base T1003. Tube flies have a long and productive history in the fly fishing world. To accommodate their increasing popularity, Renzetti offer a complete Tube Fly vise. The Renzetti Tube Fly Vise comes with a 1/16-inch diameter mandrel and handles tubes up to 4-inches long, as well as two additional mandrels that are 1/8″ and 1/32″ as well to handle nearly any tube fly you’re going to encounter. The standard features of the Renzetti Tube Fly Vise are a rotary tension screw, a black powder coated pedestal base with 7 stem.