... Low Tire Pressure Alert Cap 2.fit for car,van,trailer,bus,truck,motorcycle,bicycle 3. a new design of tire cap ... 4.check here 1. FS0852 Low Tire Pressure Alert Cap 2.low tire pressure alert cap ... pollution4.installation: just tighten the low tire pressure alert cap onto valve stem bu finger, ... Truck,Motorcycle,Bicycle The tire pressure warning cap support all tire pressures between 20psi and ...