Note: This product is only intended to work with the Ring Doorbell Pro version. Features: * Four optional angle choices, angles available for 20 degrees / 30 degrees / 40 degrees / 50 degrees (20 degrees + 30 degrees combined). * It can provide more choices and more angles available, allowing you to get a better view of visitors coming to your door. * Specifically designed to work only with the Ring Doorbell Pro version. * Perfect design --- All screw holes are well designed and perfectly fit high-quality stainless steel screws. (Equipped with an extra for each type of screws in case of loss during installation.) * Good quality and easy installation. Specifications: For video doorbell: Only for Ring Pro Available angles: 20 degrees / 30 degrees / 40 degrees / 50 degrees (20 degrees + 30 degrees combined). Material: PC Color: Black Item size (20 degrees): 11.3 * 4.8 * 2 cm Item size (30 degrees): 11.3 * 5.3 * 3 cm Item size (40 degrees): 11.3 * 5.5 * 4 cm Item weight (20 degrees): 23 g Item weight (30 degrees): 30 g Item weight (40 degrees): 35 g Package information: Package size: Approx. 12.1 * 6 * 6 cm / 4.76 * 2.36 * 2.36 inches Package weight: Approx. 129 g / 4.55 oz Package list: 1 * Mount (20 degrees) 1 * Mount (30 degrees) 1 * Mount (40 degrees) 1 * Bag of mounting screws 1 * User manual (English)