Miliheaven - A quality brand from Zopolo. Miliheaven (4 pack) high quality gun metal gray wheel valve dust caps. With rubber seal inserts to reduce air loss and prevent dirt ingress. For Multiple uses, these fit perfectly on the valve stems of cars, SUVs, bicycles, motorcycles, trucks etc. Great upgrade or replacement for your plastic dust caps. Miliheaven recommend cleaning them regularly and adding a little grease or oil to the threads to stop them from fusing to the valves.