HMH Premium Tube Tool. Same tool body as the Starter Tool, but with two machined, tapered mandrels, .041" and .062" dia. Includes tool body, premium mandrels that fit all HMH tubes, assortment of tubes, junction tubing, hooks, and instructions. These last a lifetime just like all the HMH products. Check out the full range of HMH products here- HMH Vises, Maine.