The High Strength Plastic Semi-Permanent Adhesive Mount Base consists of a 2.5" diameter flexible base with a standard RAM double hole diamond plate end. The base includes a RAM-202PSA Semi-Permanent Adhesive Disk. The diamond plate end has two holes 1.912" from center to center. This will connect to the RAM-B-238 Diamond Plates Series, to the universal industry standard AMPS hole pattern or directly to the back of the RAM Plastic HOL Cradles. This adhesive base DOES NOT have a RAM 1" rubber connection ball.