This extra-strong suction cup is specially designed for optimal use with the largest Vac-U-Lock accessories and features the classic Vac-U-Lock™ plug. This accessory guarantees stable hands-free play, even with the heaviest Vac-U-Lock™ attachments, but is compatible with any accessory in the Vac-U-Lock system. The suction cup adheres firmly to any smooth surface and has a molded pull tab for easy removal.