The RAM-B-202-AP20U consists of a 2.5" round base adapter, with 1" ball, attached to a high strength composite cradle. The cradle includes a patent pending roller design allows for smooth placement and removal of the iPad, while keeping it secure while on the go. Compatible and interchangeable with a wide range of popular RAM Mounting products, this cradle is ready to compliment your iPad and become the most useful accessory in your vehicle.