Description: Suitable diameter (maximum clip):2.3cm Suction cup diameter:3.5cm Color: Black Material: Rubber Features: 1. Professionally fixed heating rod and other seven aquarium equipment, 2. Adopting high-quality rubber with strong suction, the product has a long service life. 3. The product is environment-friendly, and it is non-toxic and harmless for water. 4. It uses the sucker to fix, and it is easy to use without requiring any tool. 5.The maximum can be clipped to 2.5cm diameter. Package listig: 5pcs * Suction Cups"5Pcs Black Suction Cups LED Lights Heating Holder Rods Clip Aquarium fish tank Sucker Suction Cup For Air Line Pipe Tube Wire