Protect your trolling motor with this kit consisting of the small RAM^(R) Tough-Claw(TM), standard double socket arm, and 1.5" round base adapter with standard AMPS hole pattern. The RAM^(R) Tough-Claw(TM) is the perfect mounting base for quick and easy installation and removal on round, square, and odd-shaped rails and bars ? without the need for any tools. Ball 1.5"