The RAM MA4 base is a marine-grade aluminum alloy rectangular plate sporting a one-inch RAM ball and the industry-standard AMPS (American Mobile Phone Standard) four-hole mounting pattern, which matches many factory-supplied device holders, including the OEM holders for the Magellan Crossover, RoadMate, and Maestro 3000 and 4000 Series GPS receivers. Its footprint measures approximately 2 x 1-5/8 inches. Includes four M4 socket screws.
Like all bases, if you are willing to drill some holes, the MA4 could also be used as a sturdy mount. Other RAM bases with an AMPS compatible hole pattern include the B202 Round Base and the B238U Diamond Base.
|Mount Type||AMPS 4-hole pattern|
|Device Type||Magellan GPS, Universal Gadget Holders|