Features: Suitable for drain openings with a diameter of 1 to 6inch, water expands to seal the pipe after passing through the drain bladder unclogger, pulsating jets through water pressure can quickly clear clogged drains. The unclog sink drain bladder uses power of water to clear slow and clogged drains in main drains and sewer lines, is very easy to use and can be apply frequently. Make of rubber, which can be apply for long terms in various environments, and have good wear resistance, is not easy to be worn and damaged, and can bear frequent use. Solving common clogs caused by hair, soap scum, grease, and more; Suitable for most types of drains including sinks, tub and showers. Important Tips: when using, connect the drain cleaning bladder to a cold water faucet, do not use with hot water, it is best to insert it into the drain pipe at least 6inches for best result. Specifications: Materials: Rubber Size: 1x5.1inch; 1.5x6.5inch; 2.5x7.3inch Package Includes: 3PCS Drain Cleaning Bladders note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.