LulzBot TAZ FlexyDually Tool Head V2 Features the popular LulzBot Hexagon Hot End for a maximum extrusion temperature of up to 300C Further upgrades include a precision machined aluminum extruder mounting plate for easier setup and a more reliable experience, print after print. This assembled tool head is sized for 3mm filament and includes two print cooling fans for clean and crisp 3D prints. These LulzBot Hexagon Hot Ends are designed for 24v TAZ (3-5) 3D printers, have a 0.6mm nozzle diameter, and have 2 dedicated hot end cooling fans.