relangce Car Tyre Air Pressure Monitor Valve Cap 4pcs 35psi Car Tire Air Pressure Indicator Valve 2.5bar 3 Colours Visual Tyre Pressure Checker Caps 1 * 2.3cm

I disliked the fact that there nwas no indication as to what pressure these caps were set to.

Put. Tyre pressure on my 4 wheels 15 hrs later all my tyres were flat.had to get AA out ,one of them damaged a valve,could not. Blow 1 tyre up.They cost £7,but they want £4 pound to return them.do not buy these valve ?

Very useful product. Trouble is people steal them.

Fitted all four- and found nearly flat tyre in morning - this happened again next day on another - so have now taken them off as the risk is too great! !