Lock On Adapter with Suction Cup Black from Blush Novelties. Lock On - compatible with all lock on dildos. Expand your play options! Suction cup base makes your adult toy hands free. Harness compatible, for greater support as you move. Peace of mind - made of non-porous PVC. Contains no fragrances or latex. Size 3 inches Suction Cup, 2.75 inches Pin. The Lock On Adapter with Suction Cup expands your play options! Insert it into any Lock on compatible toy to create a suction cup dildo or wear it in your favorite harness! The Lock On Attachment has a ridged design ensures that your toy always stays in place, no matter how hard you play. Featuring a strong suction cup base, this attachment will stick to any smooth, flat surface for hands-free fun. The pull tab makes it easy to remove!