Material: Resin Size: Diameter 4cm / 1.56" Color: As shown in the picture 1. The suction power of the Fish tank fixed suction cup used for fish tank fixation is extremely strong, which can firmly fix it on the fish tank and is not easily dropped. 2. The long service life allows consumers to use it for a long time without frequent replacement, after one-time purchasing. 3. The material of Fish tank fixed suction cup is sturdy, not easy to wear, and can withstand the constantly changing water pressure inside the fish tank. 4. The fish tank installed with Fish tank fixed suction cup does not require to hang on the fish tank frame or support, making the installation simpler and without unnecessary damage. 5. Fish tank fixed suction cup is suitable for fish tanks of various sizes and shapes, with high versatility, allowing consumers to flexibly arrange and install their ecological fish tanks. Package includes: 1 * Fish tank fixed suction cup