Upgrade your Spartan or Standard vise to tie tube flies. Comes with the Bobbin Rest and HMH Tube Vise Converter. The Tube Vise Converter will easily convert your HMH vise with screw-in / screw-out jaws to an inline rotary tube vise. Mount tubes with or without junction tubing installed; with or without pins/mandrels. Comes with two premium mandrels and sample tubes.