Includes 2 fully adjustable multi-use suckers. Unique vacuum pressure design; simply twist to adjust suction. Incredible suction for increased sensitivity. Secure seal stays in place. Disassembles for easy cleaning. AS (cylinder), ABS (cap, plunger), Silicone (seal). 4″ x 1.5″/10.25 cm x 3.75 cm. From CalExotics.