Enhanced Durability: Made from premium brass, these 0.4mm nozzles last longer than standard versions. They are precision-engineered using CNC technology to concentric input and output holes for smooth, clog-free printing. High-Temperature Safety: The included silicone socks can withstand temperatures up to 300, preventing accidental during operation. They also keep the area around the heater block clean, extending its life and stabilizing the temperature. Wide Material Compatibility: These nozzles and socks are ideal for a wide range of FDM printing materials, including PLA, ABS, PETG, TPE, TPU, and PC, making them a versatile choice for a variety of printing needs. Comprehensive Kit: This set includes 5 brass nozzles and 5 silicone socks, ensuring you have enough replacements on hand for continuous, high-quality 3D printing without interruption. Printer Model Compatibility: Designed for 3D printers, including the K1, K1 Max, 3 V3 KE, -, and -10 SE models. Please confirm your printer model before purchasing to a perfect match and optimal performance. Colour:As Shown Material:brass Package Contents: 5 * brass nozzle 5 * silicone insulation cover 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.