Model Engineers Vice

My 3rd Vice and a vice which fulfills a specific brief, the brief is cutting small brass or alloy tubes etc and also square bar or tube etc, the amount of times I've needed this type of vice for such an occasion is numerous, many times I am cutting with a Dremel and cutting disc and I'm trying to hold it by hand and cutting, the cut is never straight etc so this vice should eliminate this problem.I've found with my previous 2 vices that it's best to run a die down the screw thread and tap the th