RAM Twist-Lock Suction Cup Base with Ball includes a 3.3in diameter suction cup, attached to a diamond base with a 1in B size rubber ball. Suitable for vehicle windshields and nonporous surfaces, the fan-favorite suction cup provides a strong hold. The product comes with a diamond ball base compatible with B size double socket arm, allowing near-infinite adjustability. Made of high-strength composite and powder-coated, marine-grade aluminum, ensuring durability and reliability in demanding environments. Specifications are; suction size with 3.3in diameter and B Size (1in) Ball with a weight capacity of 2 lbs for standard use and 1 lb for heavy-duty use. The product comes with a lifetime warranty, excluding the rubber on suction cups.