Silverline Tyre Pressure Guard Set 4pce 28psi 886951
Correct tyre pressure saves fuel, money and reduces emissions. These guards provide early warning of lost tyre pressure. If tyre pressure is correct, caps are green. If tyre loses up to 25% pressure, caps change to green and yellow. If more than 25% pressure is lost, caps change to green/yellow and red. Chrome-plated brass.