Mercurry Barrel Stainless Steel Nozzle Throat with Teflon Tube for E3d V6 3D Printer 1.75mm Extruder Hot End Perfect-Office 3D printer, high speed moving shaft speed of 100mm / s, exact nozzle diameter of 0.4mm, excellent power supply system, used with PLA, low power consumption, advanced environment. High pressure size: 220mm * 220mm * 240mm and LCD panel, fast cutting speed, high printing precision, effective filament and easy to load, composite shape. This compact 3D printer is suitable for home, office, hospital and university DIY kit that needs to be assembled: It is a disassembled DIY kit that gives you an unforgettable experience of learning 3D printers step by step from scratch. As long as you are passionate about creativity, you can't miss this product Operating system backup: Windows (Linux, Mac), software: firmware, compatible archive format: STL, G-code, OBJ Customer after-sales service: we have our own production factory, directly from the manufacturer to the customer, we support the 365 day refund, if there is any problem (contact us: Amazon buyer account&gt; click on your account&gt; your Orders&gt; Search for orders and click on Contact the seller)