... stable. 6.Stainless steel rivet,more stable. 7.Teflon rubber,all weather,all temperature. 8.Robert production,1 million same quality. Features:1 ... visibility. 5) Stainless and waterproof steel backing, applicable for any weather worldwide. 6) Teflon coating rubber. 7) POM joint, low ... operation., give you an ease drving environment. 9) Almost fit all cars, easy to install. 10) Favorable price. 11)OEM ...