RAM-202U-MT1 RAM Mounts Round Plate with 1.5-Inch C Size Ball & 5/16"-18 Threaded Hole
The RAM-202U-MT1 consists of a 1.5" diameter rubber ball connected to a flat 2.5" diameter base with 0.31-18 female thread. This mount has pre-drilled holes, including the universal AMPS hole pattern.