Accessories include: A green gasket for leak prevention; Two stainless steel heavy-duty toilet tank bolts, rubber washers, stainless steel washers, butterfly nuts , etc. are used to tightly connect the toilet water tank and bowl together and protect them. High quality materials: The gasket is made of high-quality rubber and has strong corrosion resistance; The toilet water tank bolts are made of 304 stainless steel, which has strong compression and corrosion resistance. Durable and long-lasting: High quality gasket and 5/16 * 3.15 inch toilet water tank bolts can ensure a long service life without easy damage, avoiding the trouble of frequent replacement. It can be purchased once and used for many years. Multiple protection: The black rubber washers and stainless steel gasket in the accessories can perfectly prevent the water tank and toilet wrist from coming into contact with metal screws, thus providing perfect protection. Easy Installation: The installation of accessories is simple and convenient, especially the specially designed butterfly nut, which can be easily installed and disassembled by hand without the need for any tools. No need for plumbers or electricians, saving you time and money. A toilet tank gasket is a small but essential component that seals the connection between the toilet tank and bowl, preventing water leaks. This rubber or foam ring creates a watertight seal, ensuring that water remains in the tank until it's time to flush. Replacing a worn or cracked gasket is an easy and inexpensive fix that can save gallons of water from being wasted. With the right size gasket, you can restore your toilet's efficient flushing power and prevent costly water damage. Measuring in inches, these universal gaskets are designed to fit most standard toilet models, providing a reliable solution for maintaining a leak-free bathroom.