The RAP-404-202U consists of the medium version of the RAM® Tough-Claw™ with a C size 1.5" rubber ball, medium length double socket arm, and a round plate with C size 1.5" rubber ball. The RAM® Tough-Claw™ is the perfect mounting base for toolless installation and removal on round, square, and odd-shaped rails and bars. The medium version of the RAM® Tough-Claw™ can quickly be clamped on rails ranging from 1" to 1.875" in outer diameter and is ideal for mounting phones, tablets, action cameras, rod holders, and much more in a wide variety of applications.