Easy installation: You can install this with a screwdriver (screwdriver not included). Simply remove the old bolts, clean the area, and fit these bolts in place. Durable, corrosionresistant materials: The toilet bolts are made of stainless steel, offering corrosion resistance, rustproofing, and strength to resist deformation. The black gaskets are made of rubber for a reliable seal. Userfriendly and installable by nonprofessionals: Designed to fit well and be workable for anyone, including nonplumbers. Secure, leakresistant connection: The long lock nut at the bottom helps prevent shifting or movement for better stability. Rubber washers on both sides secure and seal the connection between the toilet tank and the bowl, reducing the chance of water leakage. Use scenarios Home bathroom : Replacing worn or corroded bolts when a toilet tanktobowl seal begins to leak, restoring security and preventing further leakage. toilet installation or remodel: Upgrading hardware with durable stainless steel bolts and rubber gaskets to ensure a stable, longlasting tanktobowl connection during a bathroom remodel or toilet setup. Commercial restroom maintenance: Replacing aging hardware in use environments where corrosion resistance and reliable seals are important for continuous operation and minimal maintenance.