Eumer tube fly vice The biggest benefit of Eumers tube fly vice is that the user can tighten the tube fly to prevent undesired rotation of the fly. The vice comes with a heavy, sturdy base as well as a table clamp for clamping onto other flat surfaces anywhere. The vice also includes different tying pins (3 different thicknesses). The vice has very good rotation to give a good visual view of the fly being tied and for example attaching hackles.