RAM Mount Twist Lock Suction Cup Mount w/Universal X-Grip Cell Phone Holder [RAM-B-166-UN7U]RAM Twist Lock Suction Cup Mount w Universal X Grip Cell Phone Holder The RAM B 166 UN7U consists of a 3. 25" twist lock suction cup base, double socket system and universal spring loaded X Grip holder for cell phones. The suction cup, twist lock base is designed to have a strong hold on glass and non porous plastic surfaces, including RAM adhesive disks. The mount is designed with a RAM 1" diameter patented rubber ball and socket system that has