These Nozzles are only for the E3D 1.75mm Volcano hot-end THE OLSSON RUBY - ONE NOZZLE FOR ALL MATERIALS A substantial upgrade for your 3D Printer Hot-end. Technical Specs Filament Diameter: 1.75mm Size: 0.40mm or 0.8mm Tip Diameter (Please choose from options) Compatibility list for supported 3D Printers, E3D hotends Overview SIX REASONS TO GET THE OLSSON RUBY ONE NOZZLEThe Olsson Ruby will work with a huge range of materials. PLA, ABS, CPE/PET, Nylon, and composites with abrasive additives such as Carbon fibre, Steel, Wood, Boron Carbide, Tungsten and Phosphorescent pigment, are some of the materials successfully tested so far. HIGHLY WEAR RESISTANTThe ruby mounted at the tip assures that even the toughest materials will be printable. It was originally designed for printing with a composite of Boron Carbide (B4C), the third hardest known material in the world. EXCELLENT HEAT CONDUCTIVITYSince most of the Olsson Ruby is made from brass, with its excellent heat conductivity, performance and throughput is first-class. VERIFIED PERFORMANCEPeople all over the world have been testing different iterations of the ruby nozzle since early 2016. We are very happy to hear about the good results from this community. MANUFACTURING QUALITYThe Olsson Ruby is manufactured, assembled and tested in a high-quality facility in Sweden. Visit olssonruby.com for more details SPEEDBy using the High Output versions of the Olsson Ruby nozzles, it is possible to reach a higher throughput and speed than ever before for abrasive materials, while retaining wear-resistance and reliability.