No plugging, no leakage, stable performance, high precision printing. Brass material good thermal conductivity high hardness pipe inner wall roughness Ra Less than 0.4, reduce plugging phenomenon, high temperature resistance, fast heat conduction, printing more stable. Smooth feed without leakage pipe thread 45 chamfer design, smooth feed, smooth section of the pipe mouth, and highly close to the docking accessories. High temperature resistance, good thermal conductivity Made of high-quality 6063 aluminum, high temperature resistance of 300, 0.5 Wear-, -, waterproof and rust-proof, and high precision. Nozzle diameter: 0.4mm. Colour:As Shown Material:Plastic+Metal Package Contents: 1 * Extruder Hot End Kit 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.