Describe: A good seal prevents the tank from leaking. And the chain is designed so that it can be hung up for storage when not in use. Two sizes allow you to choose the most suitable one according to your needs. Exquisite and high-quality workmanship makes it rust and corrosion resistant. Made of rubber material, it is very durable to use. Type A is 7.5cm in diameter and Type B is 6.4cm in diameter. Ideal for bathrooms, kitchens, toilets, bathtubs, etc. Product name: Rubber water stopper Material: Rubber Features: environmental protection, good sealing, anti-rust Size Details: A: Diameter: 7.5 cm/2.95 inches (approx.) B: Diameter: 6.4 cm / 2.52 inches (approx.) notes: Due to different lighting and screen settings, the color of the item may be slightly different from the picture. Please allow for slight size differences due to manual measurements. The package includes: 4 rubber water stopper - For non-disposal drain, they can also use as drain plug or stopper. - The chain design is convenient to out the water plug and release water. - Sealed perfectly, flat cover will not get into the drain, so won't get dirty easily. - Suitable for home, hotel, bathtub, small swimming pool, sewer water plug, etc.