The RAM Tough-Claw is the perfect mounting base for quick and easy tool-free installation and removal on round, square, and irregular rails and bars. The Tough-Claw can be tightened onto rails with an outer diameter of 0.625" to 1.5". It is ideal for securing trays, action cameras, smartphones, rod holders for storing rods, and much more across a variety of applications. Perfect for mounting on the yoke of an airplane, on handlebars and seat posts of bicycles, kayak rails, roll bars, and more, the RAM Tough-Claw will soon become another essential RAM component in your collection of mounting options.