RAM Heavy Duty Suction Cup Base (B-224-1U) Heavy Duty Suction Cup Base - 3.3" Diameter Suction Cup with 1" Ball The RAM-B-224-1U consists of a 3.3" twist lock suction cup base that is connected to the (RAM-B-238U), diamond base with 1" rubber ball. The suction cup is designed to have an extra strong hold on any smooth non-porous surface, but for best result, mount the suction cup on a glass or non-porous plastic surface. Specifications/Features Material: High Strength Composite and Powder Coated Marine Grade Aluminum Ball Size: 1" Rubber Ball "B" Size Note: The "U" in the part number reflects product packaged in poly bag. Share Buy $29.00 Shipping Details Shipping cost for item: $8.00