Specification: Material: Brass Screw Thread: M6 Input Diameter: 2mm Filament Diameter: 1.75mm for E3D V5 V6 Nozzle Diameter: 0.2mm 0.3mm 0.4mm 0.5mm 0.6mm 0.8mm 1.0mm How to Change a 3D Printer Nozzle? 1: Turn on the 3D printer, heat the nozzle and heat block to the target temperature. 2: After heat finishing, close printer, take spanner to hold the heat block. Then use socket screwdriver to screw old nozzle extruder out. Notice: Please don’t touch the old nozzle and heat block to avoid scalding. 3: Spanner keep to hold the hear block, use the socket screwdriver screw the new nozzle in, make sure tight. Stamp size on surface, convenient to pick the one you need. The hole of print nozzle is consistent size and machining, the thread is clean and well formed. Can be used to print PLA, ABS, PETG, Nylon, TPE, TPU, PC and most any other non-abrasive materials. Why Would You Need More Than One Nozzle? You want to print a model quickly, so you use a bigger nozzleYour current nozzle gets clogged, and you need to replace itYou want fine details, so you use a smaller nozzle As the last part to be in contact with filament, the nozzle can influence strength, print time and print material.