Review on 4 Pack Red CKAuto USA Flag Valve Stem Caps - Aluminum, Dust Proof & Corrosion Resistant For Cars, Trucks, Bikes & More! by Paul Giordano

you would love them as they are plastic inside and aluminum outside so not residue or rust going into the air valve, the silver color makes it easier to identify them on my SxS even after heave mudding but the flag sticker doesn't hold well, already lost two out four.will surely buy it again.