RAM Mount 2-1/2" Diameter Base w/1.5" Ball [RAM-202U] RIGID Industries but look at the features

but look at the features and you're sure to see that the Aqua is far from ordinary

Meets ABYC safety requirements for panels with combined AC and DC loads

while conformal-coated electronics enhance durability in moist conditions

Fitting:Connections for 5/8" - 3/4" ID inlet hose

RAM Mount 2-1/2" Diameter Base w/1.5" Ball [RAM-202U] RIGID Industries but look at the featuresRAM 2. 5" Round Base w AMPs Hole Pattern & 1. 5" Ball The RAM 202U consists of a 1. 5" diameter rubber ball connected to a flat 2. 5" diameter base. This mount has pre drilled holes, including the universal AMPS hole pattern. Material: Powder Coated Marine Grade Aluminum Ball Size: 1. 5" Rubber Ball Size