Package contents: You will receive a total of 16 pieces of aquarium glass clips, enough for daily use and replacement. You can also give some to your friends who like fish farming. High-quality material: The aquarium glass clip is made of acrylic, which is non-toxic, sturdy, and not easy to deform. The clip is very transparent and durable for long-term use. Product dimensions: 5.5 x 4.2 x 1.8 cm (2.17 x 1.65 x 0.71 inches). Inner width of the clip: 8 mm (0.31 inches), suitable for aquariums with a thickness of 7-8 mm (0.27-0.31 inches). Please check the thickness of your aquarium glass before ordering. Features: Easy to install - Just place the top edge of the aquarium glass into the clip's groove, and it will be installed in a second. Easy to use - The hose stays firmly in place and does not slip off. With these items, you can clean the aquarium and change the water more easily. A great accessory for aquariums and fish tanks. Wide range of applications: Perfect for supporting the aquarium lid. The more clips you install, the greater the load-bearing capacity. Suitable not only for various types of open aquariums, fish tanks, grass aquariums, and pet aquariums that require temperature control, but also effectively prevents fish from jumping out or pets from escaping.