[Size]: Thread: M6; Nozzle Diameter: 0.4mm; Input Diameter: 3.2mm; Total Dimension: 12.5x7mm / 0.5"x0.28" (L*D) [Compatibility]: Compatible with 3mm Filament V5 V6 3D printers. [Brass Material]: Not easy to get rust or erosion, provides long service life. [Smooth Surface]: Smooth contact surface can be well connected with other head of hot end to avoid exudation, get a smooth and clean printing. [Application]: Suitable for most non-abrasive materials such as PLA, ABS, Nylon, TPE, TPU, PC etc. Feature: 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. Extruder brass print heads are usually applied to print non-abrasive material filaments such as PLA, ABS, Nylon etc. Specification: Material: Brass Screw Thread: M6 Nozzle Diameter: 0.4mm Input Diameter: 3.2mm Total Dimension: 12.5x7mm / 0.5x0.28 inch (L*D) Package Content: 4 x Brass Nozzle NOTE: Small accessories, please keep away from children. After replacing the nozzle, please recalibrate the distance between nozzle and build plate to ensure the quality of print parts. How to Replace Nozzles? 1: Turn on 3D printer, heat the nozzle and heat block to the target temperature (PLA: 180-220, ABS: 240-280). 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 dont touch the old nozzle and heat block to avoid burning. 3: Spanner keep to hold the hear block, use the socket screwdriver screw the new nozzle in, make sure tight.