Brass Schraeder Valve with 1/4" NPT threads.
This is a great fitting to have in each circuit of your air ride system. It allows you to fill and lift your suspension without running your compressors, using a shop air source like your shop compressor or a gas station compressor if your electrics quit! Also put on in your tank circuit to fill your tank. You can also use this valve to drain the air out of the system. It can be used in an emergency, like when your air ride management systems isn't working!