The RAM-101U consists of a 6 inch C size 1.5 double socket arm and two 2.5 diameter round ball bases that contain the universal AMPS hole pattern.
Ram Double Ball Mount with 1/4-20 male Thread - RAM-101AU
Ram-Mount D-111U-C Marine Electronics Mount
Universal RAM Mounts
Ram-Mount D-111U-C Marine Electronics Mount
B&W Tow & Stow Adjustable Ball Mount
RAM® Universal Double Ball Mount with Two Round Plates - C Size Short
RAM® Universal Double Ball Mount with Two Round Plates
RAM® C Size Double 1.5 Ball Mount with Two Round Plates - Ram Mounts
RAM Mounts, In-Car
The RAM-101U-D consists of a long double socket arm and two 2.5 diameter round bases with the universal AMPS hole pattern. Designed into the mount is
RAM® Double Ball Mount with Two Round Plates - C Size Long