Consists of the large Tough-Claw base, double socket arm and round base adapter. The RAM Tough-Claw is the perfect mounting base for quick and easy tool-less installation and removal on round, square, odd shaped rails and bars. The Tough-Claw? can be clamped on rails from 1" - 2.25" outer diameter. The round base adapter contains the industry standard universal AMPS hole pattern, which will connect to a large variety of RAM Mount and third party cradles. RAM MOUNT PRODUCTS HAVE A 10-12 WEEK LEAD TIME.