Ram Mount 2.5-Inch Composite Round Base with the AMPs Hole Pattern and 1-Inch Ball<div style="text-align: left;"><strong>[Product Information]</strong><ul><li><span class="a-list-item"> Contains a 1" diameter rubber ball connected to a flat 2.5" diameter base </span></li><li><span class="a-list-item"> This mount has pre-drilled holes， including the universal AMPS hole pattern </span></li><li><span class="a-list-item"> High Strength Composite </span></li><li><span class="a-list-item"> The RAP-B-202U will attach to any RAM composite cradle </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/41ETuO2bQkL.jpg" noproxy>