Made of 100% silicone this matte black double sided suction cup is a must. Attach just about any dildo to a) another dildo or b) a flat surface. Turn your dildos into suction cup dildos and double ended dildos in a snap. This product is compatible with all products and most high end dildo. The suction cup diameter is 2.5 inches and can support dildos up to 3 pounds.