RAM Twist Lock Suction Cup Mount with Round Plate Adapter Short RAM Twist Lock Composite Suction Mount for Delorme Earthmate + More (RAP B 166 DEL1) (sku 54252) RAM Twist Lock Composite Suction Cup Mount with AMPS Hole Pattern Amazon.com: RAM MOUNTS Twist Lock Composite Suction Cup Base with Ball. The RAP B 166 DEL1, twist lock suction cup mount consists of a 3. 3" suction cup locking base, socket system and custom high strength composite cradle for the Delorme Earthmate. The mount is designed with a RAM 1" diameter patented rubber ball and socket system that has adjustment points at both ends of the double socket arm; this allowing for almost infinite adjustment and perfect viewing angles. Simply attach the suction cup base to the windshield of your vehicle for an easy and safe way to view your Delorme Earthmate. High quality materials ensure your electronic device is safe, secure, and within easy reach. RAMs patented design also dampens shock and vibration helping to extend the life of your Delorme Earthmate. HARDWARE INCLUDED Assembly Hardware SUCTION SIZE 3. 3" Diameter SOCKET TO SOCKET LENGTH 3"