RAM-247U-4 RAM Square Post Clamp Base for Posts up to 4

The RAM-247U-4 is a clamp base with 1.5" rubber ball that will connect to rails up to 4" maximum in width. HARDWARE INCLUDED (2) 5/16"-18 x 3" Macine Screws (2) 5/16"-18 Nylock Nuts CLAMP RANGE 4" max width BALL/SOCKET SIZE C Size (1.5") WEIGHT CAPACITY 4 lbs MATERIALS Marine-grade aluminum PACKAGING TYPE Poly Bag FEATURES: Clamping base ideal for square posts up to 4” in width; adjustable and easily removable Included C size 1.5" RAM rubber ball allows for connection to any C size RAM double socket arm; ball and socket technology allows for near-infinite adjustability Made of powder-coated, marine-grade aluminum for durability and reliability in the most demanding environments Backed by a lifetime warranty WEIGHT 1.17 lbs.