This is a diamond base adaptor for the RAM "A" sized ball system. It consists of a 0.56" diameter rubber ball connected at right angles to a 2.43" x 1.31" diamond base, with holes that match the industry standard AMPS hole pattern and will connect to a large variety of RAM Mount and third party cradles.

• Material: Powder Coated Marine Grade Aluminium
• Ball Size: 0.56" Rubber Ball "A" Size
• Made in the USA and comes with a lifetime warranty

Note: The "U" in the part number reflects product packaged in poly bag.