Features: The toilet tank gaskets repair kit adopts quick installation structure. Fixed leaky tank with this toilet tank replacement kits. Toilet bolts make of stainless Steels, which is Corrosion resistant, rustproof and hard to break or deforms. Black gaskets is make of rubber, waterproof. The long lock nuts at the bottom is used to avoid shifting or movement, have better stability and the rubber washers on both side secure and seal the toilet tank to the bowl, prevent water leakage. Easy to install: You just need to install it with a screwdriver(Excluding), simply remove broken bolts, clean around the area and then fit the our bolts. Prefectly fit and easy to install, even none plumbers can install it. Specifications: Materials: 304 stainless Steels and rubber Screw length: about 100mm/3.94inch Package Includes: 1set Toilet Seat Attachment note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to difference between different monitors, the picture may not reflect the actual color.