This High Strength Plastic Semi-Permanent Adhesive Mount Base consists of a 2.5" diameter flexible base with a double hole plate, pitch = 1.912" center to center. This will connect to the RAM-B-238 1" diameter ball adapter, to any device or component with the universal industry standard AMPS hole pattern or directly to the back of the extensive range of RAM device holders. Includes a RAM-202PSA Semi-Permanent Adhesive Disk. Colour: Black Material: High Strength Plastic