RAM-247U-4, “C” Size 1.5″ Ball 4″ Max Width Clamp W/1.5″ Ball

4″ Max Width Clamp w/1.5″ Ball. How it works: First choose a device adaptor. RAM offers a wide selection of adaptors and cradles for your specific device. Secondly choose an arm. Select an arm based on your desired length and placement. Lastly, choose a base. Select from a variety of bases to help secure your device where you need it. Ball Size Selection Guide: “B” Size balls are 1″ diameter, hold up to 4 lbs., and are ideal for phones, cameras and cup holders. “C” Size balls are 1.5″ diameter, hold up to 8 lbs, and are ideal for tablets and small monitors.”D” Size balls are 2.25″ diameter, hold up to 12 lbs., and are ideal for display integrations.