Small version of the RAM Tough-Claw base is 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 Included C size 1.5" RAM rubber balls allows for connection to any C size RAM double socket arm; ball and socket technology allows for near-infinite adjustability Made of stainless steel hardware and high-strength composite for durability and reliability in the most demanding environments Backed by a lifetime warranty