The UBL Large Threaded Suction Cups 4-Pack is designed for durability and versatility, offering a secure hold for various applications. Each suction cup is rated to support up to 7 pounds, providing dependable strength for your projects. With a diameter of 2.375 inches at rest, expanding to 2.5 inches in use, these suction cups ensure a snug and reliable fit. Featuring a threaded nut and post, they are perfect for installations that require added stability and customization, making them an ideal choice for both replacement and new setups.