The bottom diameter of the suction cup is 6.5cm, with a large surface design and stronger suction. Size: 17*6.5cm 【Durable and reliable】: This suction cup hook is made of strong ABS material and nylon fabric, which is waterproof, corrosion resistant and highly resistant to high temperatures. Nylon straps with a certain thickness are highly wear-resistant and will not break due to frequent friction. The bottom of the silicone suction cup is not only odorless, but also stronger and safer. 【Easy to use and remove】: Before installing the suction cup, you can rinse it with water and dry it, which can improve the adhesion. You don't have to worry about it being non-removable; it can be disassembled and then recycled. Note: Install on smooth and flat surfaces, not suitable for uneven concrete walls or stone walls. 【Compact size】: The suction cup hook is very convenient for storage, you can put it in any toolboxes or bags. Each pack contains four suction cup hooks, enough to meet your needs. You can share it with family, friends or colleagues. 【Very practical】: The strong suction cups are multi-functional and can hang almost any objects, towels, toys, bathrobes, scrapers, kitchen tools, etc. You can use it for outdoor travel, picnics, camping and other activities. Note: The data is all measured manually. Please allow 1-3 cm error due to light and display differences. There may be color differences. Please refer to the actual items received.