The Dragon Hotend UHF is made with a focus on high-speed printing. You can easily change the nozzle, without having to hold a heaterblock. It's easy to mount with the E3D V6 compatible heatsink, or rigid mount with screws. This ultra high flow version comes with both a 0.4 and 0.6mm plated copper nozzle. It also has a meltzone extender to get the highest flowrate possible. Compatible filaments: PLA, ABS, PETG, TPU, PP, PC, Nylon, PEEK, PEI and composite materials containing abrasive additives, such as carbon fiber, steel, wood, etc.* Package contents: 1x Dragon Hotend UHF - Black1x Meltzone Extender1x Plated Copper Nozzle, 0.4mm1x Plated Copper Nozzle, 0.6mm 1x Hex Wrench Set (1.5mm, 2.0mm)1x Screw Set1x Thermal Paste1x Collet Clip1x Bowden Collet1x Silicone Sock HF 1x Silicone Sock UHF * We recommend using a hardened steel nozzle for printing abrasive materials.