Check the listing for details. RAP-B-400-201U RAM Tough-Claw Small Clamp Base with Double S.... Color: Black, Condition: New. Listed at 56.44 USD. RAM Tough-Claw Small Clamp Base with Double S... RAP-B-400-201U Genuine RAM Products! 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 0.625 INCHES - 1.14 INCHES outer diameter. Ideal for mounting tablets, action cameras, smartphones, rod holders for rod storage and much more in a wide variety of applications. Perfectly suited for mounting on the yoke of an aircraft, handlebars and seat posts of bicycles, kayak rails, roll bars and much more, the RAM Tough-Claw will soon become another essential RAM component in your collection of mounting options.clamp range .625 INCHES - 1.14 INCHES diametersocket to socket length 3 INCHES ball size B Size (1 INCHES )weight capacity Standard Use: 2 lbsHeavy-Duty Use: 1 lbmaterials High strength compositepackaging type Poly BagWeight 0.5 lb clamp range .625 INCHES - 1.14 INCHES diameter socket to socket length 3 INCHES ball size B Size (1 INCHES ) weight capacity Standard Use: 2 lbsHeavy-Duty Use: 1 lb materials High strength composite packaging type Poly Bag Weight 0.5 lb