RAM Quick-Grip XL Spring-Loaded Phone Mount with Drill-Down Base (RAM-B-138-PD4U) (sku 53805)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 Includes 2. 5 drill down round ball base, medium length B size RAM double socket arm, and diamond ball base; ball and socket technology allows for near infinite adjustability Made of powder coated, marine grade aluminum and high strength composite for durability and