P10V6 Neocision Distillation Head - USA MadeP10V6 Distillation Head P10V6 Distillation Head has 6 sets of vigreux in the distillation column with 45 50 lower joint, 24 40 Thermometer Joint, and a 34 45 side joint and includes GL 14 barb connections. MADE IN THE USA Designed for 10 Liter Flasks Set of 6 vigreux to allow for packing media Larger vacuum jacket allows for less heat loss during distillations Larger vapor path to allow for gas vapor phase flow Increased internal diameter for faster,