These valve cores are made of nickel plated brass with a thread size of .2108-36 and a red Teflon seal. These valve cores meet specification TR-C1. Valves have a pressure operating range of 0 - 200 PSI. Product Features:Operating pressure range of 0 to 200 pounds per square inchOperating temperature range of -40 degrees Fahrenheit to 302 degrees FahrenheitMeets tire and rim specification C1
