This product is part of the RAM Mount "C" sized ball system (1.5" diameter ball) and has a ball connected at right angles to a 2.43" x 1.31" diamond base. The base has two holes in it, 1.912" from center to center, which matches the industry standard AMPS hole pattern and will connect to most RAM Mount and third party cradles.

• Material: Powder Coated Marine Grade Aluminium
• Ball Size: 1.5" Rubber Ball Size
• Made in the USA and comes with a lifetime warranty

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