RAM Twist & Lock Suction Cup Mount with LONG Arm & Cradle for the Garmin Nuvi Genuine RAM accessories - Part No: RAM-B-166-C-GA37U. The RAM-B-166U, twist lock suction cup mount consists of a 3.25" suction cup locking base with a 5" LONG arm, diamond plate end & cradle RAM-HOL-GA37u for the Garmin Nuvi 1690.
eBay