The "Lufty 2" valve has been further innovated . It is a specific tubeless valve designed to be compatible with most inserts on the market. The innovation consists of a more advanced design with the following features: 1. New aviation aluminum. 2. Lowered valve head with 2 air intakes. 3. Valve head lower part with groove to support valve grommet. 4. Reinforced valve stem. 5. Longer aluminum cap for added protection. 6. Valve cap and head with PTN logo. 7gr Ultralight weight