Description This car magnet metal plate is designed for use with magnetic mobile phone car mounts, magnetic air vent mounts, and other magnetic smartphone car mounts. High-quality and durable replacement metal plates for magnetic cell phone holders. Includes both rectangular and round metal plates to attach devices to magnetic mounts. Features - Color: Black - Material: Stainless iron - Size (rectangular): Approximately 6.50 x 4.50 x 0.20 cm / 2.55 x 1.77 x 0.08 in - Size (round): Approximately 4 cm / 1.57 in (diameter) - Note: These plates are not magnets themselves and must be used with a magnetic phone holder - Strong magnetic attraction when used with a magnetic mount; easily attaches to the back of electronic devices - Rectangular metal plate is ideal for larger phones, mini tablets, and GPS devices - Thin, sleek design ensures no added bulk and will not scratch your smartphone - Rounded corners help protect your device and prevent hand scratches - Compatible with smartphones, tablets, and GPS devices equipped with magnetic mounts Packing List 20 x Iron Plates