This version of the spring-loaded RAM® Quick-Grip™ holder provides a secure fit for a variety of large phones and other devices. The adjustable side keepers ensure that devices like GPS units and Bluetooth speakers within the listed compatible dimensions will also fit in the holder. Spring-loaded holder features adjustable side supports that provide a secure fit for a variety of large phones and other devices; easily insert and remove your phone with one hand. Made of powder-coated, marine-grade aluminum and high-strength composite for durability and reliability in the most demanding environments. Backed by a lifetime warranty. Holder dimensions: Height range: 5.75" - 8.25". Width range: 2.625" - 3.625". Max depth: 0.72". Ball/ socket size: B Size (1"). Weight capacity: 2 pounds.