【Material】 These aquarium suction cups are made of high quality plastic, soft, durable and safe, have strong adsorption on the fish tank. 【Easy to Use】 The zip ties can perfectly fit the aquarium suction cups, the suction cups and zip ties are easy to install and uninstall on fish tanks, aquariums and other glass surfaces. 【Application】 Our aquarium suction cups are suitable for holding pipes, binding moss and objects, and positioning small plants, creating a variety of lifestyles for fish and shrimp in the aquarium. 【Specifications】 These suction cups are 3 cm in diameter . 【Package】You will get 20 suction cups and 20 adjustable zip ties, enough quantity for daily use and replacement.