• These are genuine nozzles made for Flexion Extruder Heads. Great low profile nozzles that are individually machined, not pressed. We have several sizes available: 0.2, 0.4, 0.6, 0.8 & 1mm Please specify what size you would like in the order notes. If you do not specify the size, we will send the standard 0.4mm nozzle as those are the most common.