Small version designed to quickly clamp to round, square, and odd-shaped rails and bars ranging from .625" to 1.5" in outer diameter; rubber pads provide stable gripping and protection of mounting surface Ideal mounting base for phones, tablets, cameras, rod holders, and much more; includes 1" B size rubber ball for attachment to RAM double socket arms Made of high-strength composite and stainless steel hardware for durability and reliability in the most demanding environments