The nozzle and hose are integrated for quick disassembly and easy replacement. Color-coded silicone sleeve identifies nozzle sizes conveniently. The specifications are complete, smooth and oily shape, clear lettering, so that you have good identification. Rapid heating and efficient heat dissipation. brass process, good thermal conductivity, high hardness, fast heat dissipation. Smooth inner wall of the nozzle, no burrs, small viscosity coefficient, and smoother the wire output. Size: 0.4mm Input Diameter: 1.75 Temperature: up to 300 Due to different batches, there may be differences in product appearance, color, and printed text, which will not affect the use. Colour:brass Material:copper Package Contents: 1x extrusion 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.