The Black Resin Aquarium Heater Suction Cups Clips for Fish Tank Thermostat Rain Bars Strong Hold 35mm Diameter Clamp, 2.5cm Glass, 4 Pack, are an essential addition to your aquarium setup. Designed with durability and effectiveness in mind, these suction cups offer a strong, secure hold on your aquarium heater and rain bars, ensuring optimal heat distribution and preventing leaks. The black resin material not only provides a sleek, modern look but also resists corrosion and stains, maintaining your tank's aesthetic appeal. Each suction cup features a 35mm diameter clamp and a 2.5cm glass thickness, making them compatible with various aquarium sizes and glass thicknesses. To further enhance their performance, these suction cups come as a 4-pack, allowing you to install multiple heaters or rain bars without the need for additional purchases. With their strong hold and quality construction, the Black Resin Aquarium Heater Suction Cups Clips for Fish Tank Thermostat Rain Bars Strong Hold 35mm Diameter Clamp, 2.5cm Glass, 4 Pack will undoubtedly become a favorite among aquarium enthusiasts and professionals.