The main function of a sink overflow cover is to prevent water overflow and protect household facilities in situations where you leave the sink unattended or forget to close the faucet, thereby avoiding uncontrolled water overflow and damage to the surroundings. These sink overflow covers are suitable for holes ranging from 0.86 in. to 0.95 in Please ensure that it matches your sink before making a purchase. Any extras can be kept as spares. Our product, as a sink accessory, has excellent corrosion resistance, ensuring a bright and glossy surface even with long-term use.