Snap-in Short Black Rubber Valve Stem (TR413) 1. This pack of 4 snap-in valve stems is easy and convenient to install. Simply pull them through (if there is tension, the diameter will reduce and then re-expand for a tight seal). 2. They are designed for tubeless 0.453inch (11.5mm) diameter rim holes and are the industry standard for passenger cars and light trucks. 3. Constructed from a standard brass core and ozone resistant EPDM rubber, these stems are leak-proof , up to 65 PSI (448kpa). 4. Material: rubber + copper (Durable steel construction,Molded rubber coating protects rims and wheels) 5. Installation method: snap-on 6. Features: high temperature resistance, aging resistance 7. Package Includes: Car valve TR413 x 4 ,Tire valve core x 4, Valve core wrench x 1 6. Made for installation or removal of snap-in type tubeless tire valves 8. Note: Be sure to check if the valve should be installed before use.