This NFC repeater mount (RAM-B-102-NFCU) consists of a NFC repeater and double ball mount with 2-hole diamond base. The diamond base contains two holes 1.912" from center to center, compatible with many industry standard dashboard mounts. Install this ultra-rugged drill-down mount almost anywhere in-cab for the NFC repeater. The perfect add-on accessory for public buses and transportation for payment, or for student/corporate safety protocol.