RAM Tough-Claw Small Clamp Base with Ball is designed for toolless installation and removal on round, square, and odd-shaped rails, quickly clamping on to 7/8in, 1in, and 1-1/8in rails. This compact model is perfect for attaching phones, tablets, cameras, rod holders, and more in diverse applications. You can mount it on an aircraft's yoke, bicycle and motorcycle handlebars, or kayak rails and roll bars. Rubber pads ensure stable gripping and protect the mounting surface. The high-strength composite construction and stainless steel hardware offer durability and reliability in demanding environments. It features a lifetime warranty, a 1in B size rubber ball for attachment to RAM double socket arms, and a weight capacity of 2 lbs for standard use, 1 lb for heavy-duty use.