RAM 2.43" x 1.31" Diamond Base with 1.5" - Ball - RAM-238U

The RAM-238U consists of a 1.5" diameter rubber ball connected at right angles to a 2.43" x 1.31" diamond base. The base has two holes 1.912" from center to center, matches the industry standard AMPS hole pattern and will connect to a large variety of RAM Mount and third party cradles. Specs & Features Material: Powder Coated Marine Grade Aluminum Ball Size: 1.5" Rubber Ball Size Note: The "U" in the part number reflects product packaged in poly bag. Weight:0.15 lbs.   Compatible With Compatible Arms and Mounts RAM Medium Length Double Socket Arm for C Size 1.5" Balls - RAM-201U RAM Short Double Socket Arm for C Size 1.5" Balls - RAM-201U-B RAM Long Length Double Socket Arm for C Size 1.5" Balls - RAM-201U-D RAM Double Socket Arm with RAM® Pin-Lock™ Security Knob and Key Knob for C Size 1.5" Balls - RAM-201-SU RAM Composite Double Socket Swivel Arm for C Size 1.5" Balls - RAP-200-2U  RAM Mount - RAM Composite Double Socket Swivel Arm for C Size 1.5" Balls - RAP-200-12U RAM Composit