LulzBot Mini Flexystruder Tool Head V2 After upgrading your desktop 3D printer you can create custom flexible cases, stretchy props, costumes and other wearables, enclosures, and grips with flexible 3D printing filament This assembled tool head is sized for 3mm filament and includes a print cooling fan for clean and crisp 3D prints The LulzBot Hexagon Hot End is designed for 24v TAZ (3-5) 3D printers, has a 0.6mm nozzle diameter, and comes equipped with a dedicated hot end cooling fan Compatible materials: NinjaFlex, SemiFlex by NinjaTek, PCTPE by Taulman 3D, and other flexible 3D printing filaments