The product include nozzle, PTFE tube , protective silicone cover case and quick pneumatic connector. Silicone cover made of heat-resistant, non-stick silicone material, much more and functional, heat resistant. The 3D printer nozzles are made of , sturdy and , solve the problem of plugging and missing materials to extent, low thermal conductivity, resistant to corrosion, high abrasion resistance. Features - ColorAssorted Color - Material: PTFE, silicone, brass, stainless steel. - Size: 13.00X10.00X3.00cm/5.11X3.93X1.18 inch. - PTFE tube has excellent chemical stability and strong acid and alkali resistance. - PTFE tube has a very low coefficient of friction, is an excellent friction reducing and self-lubricating material. - has a comfortable feel, high strength, good toughness, and is small and light. - The housing is made of , silicone. There is a hole to the end, can attach it to a key ring, hangs it on a necklace, etc. won't lose it. - Fine workmanship and creative appearance ensure its popularity and practicality. Package list: 3 x nozzles 3 x silicone covers 2 x connectors 1 1 x PTFE tube