Choose the new car holder for your phone which features a compact size to not hinder the use of your smartphone. Test it yourself! Perfect for every journey! Try the new car holder for smartphones that has a strong magnet to keep the phone stable. Car holder and cable organizer This holder is ideal as it has side clamps to support the cables. Specifications: Material: polycarbonate; Mounting type: ventilation grille; Dimensions: 32 x 38 x 37mm.