Aleph Objects is releasing their LulzBot v2 hot ends currently being used on all of their award winning 3D printers for individual sale. The all metal hot end allows DIY printers to raise their maximum extrusion temperature to 300°C (572°F), making the use of exotic and advanced 3D printing filaments possible. The hot ends are available in three different nozzle diameters, 0.35mm, 0.50mm and 0.60mm. You can read more about the LulzBot v2 over on 3DPrint.com: http://3dprint.com/100487/lulzbot-v2-hexagon-hot-ends/