For proper installation, refer to media number M0158065. The spring-loaded phone holder features an 'X' design that expands and contracts to provide a perfect fit for your device (even with a case). The phone holder kit provides an easy to see mounting location for your phone with a wide range of adjustability to achieve the ideal viewing angle. The phone holder is made of powder coated, marine-grade aluminum, stainless steel components, and high-strength composite for durability. Fits phones ranging from 1.75" to 4.5" (44.5 mm - 114.3 mm) in width, a depth of 0.875" (22.2 mm) max, and a weight up to 1 lb. (0.45 kg). Estimated time to install: 15 minutes