This stem with upper cup is specifically designed for use with PermaShine® 13" balloons. The stem provides a secure and stable connection, while the upper cup is made to support the balloon, keeping it upright and properly positioned. This combination ensures that the balloon stays in place, creating a clean and professional look for your displays. It is important to use this stem and cup only with PermaShine® 13" balloons to ensure proper fit and functionality. Together, they offer a reliable solution for balloon setups, whether for events, promotions, or special occasions.