Brass Nozzle Kit: This hot end kit includes 5 additional 0.4mm brass nozzles, made of durable brass material with good thermal conductivity and high hardness. This printhead ensures consistent performance and reliability over a wide range of printing processes Silicone Socks: This hot end kit contains 5 extra silicone socks that wrap nicely around the heating block to avoid accidental contact of hands with the heating block and keep the nozzle and heating block clean Easy to install: This hot end kit comes pre-assembled with heating tube, thermistor, nozzle and silicone sleeve, requiring no wiring and stripping work, making it an easy replacement for the printer's previous hot end kit and use Compatible: Our 3D printer print head kit is compatible with Neptune 3 Pro/Plus/Max 3d printer. The hot end heating block adopts high-quality alloy throat, which can withstand high temperatures of 300 degrees Celsius, is sturdy and durable, and provides you with stable printing quality. Colour:Photo Color Material:copper Package Contents: 1 x 3D Printer Hotend Heating Block Kit 5 x Silicone Socks 5 x brass nozzles 0.4mm Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.