RAM Finger-Grip Universal Mount with RAM Twist-Lock Suction Cup Base (RAM-B-166-UN4U) (sku 54192)The RAM B 166 UN4U consists of a 3. 3" diameter suction cup twist lock base, double socket arm and universal Finger Grip cradle. 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 universal Finger Grip cradle is designed to hold a large amount of cell phones and electronic devices. The cradle comes with (3 sets) of four flexible rubber coated fingers placed