The product include nozzle, PTFE tube , protective silicone cover case and quick pneumatic connector. Silicone made of heat-resistant, non-stick silicone material, much more and functional, heat resistant. The 3D printer nozzles are made of brass material, sturdy and , solve the problem of plugging and missing materials to extent, low thermal conductivity, resistant to corrosion, high abrasion resistance. PTFE tube less friction means more responsiveness, less retraction, more accurate prints, less slippage, wear, and tear on the extruder, and less clogging when printing chunky filaments such as some woodfills or ironfills. Features - Color: Assorted Color. - Material: silicone. - Size: 0.4 x 0.4cm/ 39.37 x 0.16 x 0.16 inch. - The 3D printer nozzles are made of brass material, sturdy and . - Nozzle through long-term testing to solve the problem of plugging and missing materials to extent, low thermal conductivity, resistant to corrosion, high abrasion resistance. - Silicone can extend the life of the heater block and keep your heater block clean from burnt and plastic. - Silicone don't just keep the block clean, but also keep heat inside the hotend and off your print. - PTFE tube less friction means more responsiveness, less retraction, more accurate prints, less slippage, wear, and tear on the extruder, and less clogging when printing chunky filaments such as some woodfills or ironfills. Package list: 1 x PTFE tube 2 pneumatic connector 3 x silicone case 3 x nozzle