The MK8 ruby nozzle is perfectly compatible with various materials such as PEI, PEEK, nylon, PC, etc. The nozzle has strong anti-corrosion and anti-wear ability, and can still maintain excellent performance during long-term use. Since the nozzles are valuable, we only accept the following logistics methods. 1.The corresponding model of the ruby nozzle is MK8. The body of the nozzle is brass, the gemstone is artificial gemstone, we still maintain the world's top workmanship, each ruby nozzle will go through a lot of processes in the manufacturing process, I hope that our rigorous attitude can be recognized by customers. 2.A torque wrench is required during the installation of the nozzle. The nozzle is subjected to a maximum torque of 5 N.m. Exceeding this torque will damage the brass inlay. If you don't have a torque wrench. Then it doesn't matter. Don't use too much force during the installation process, please try to control your strength. In order to protect our technology, the drawings are not exactly the same as the actual nozzles. We have hidden some details. As the nozzles are constantly upgraded, the dimensions may not be exactly the same as the drawings, but this will not affect your device match. We will only make this product more perfect. thank you for your support. PEEK（ USE MK8 RUBY NOZZLE） PEI 1010 （USE Hardened steel V6 NOZZLE） Printed display of PEI And PEEK materials. ▼