Each bolt in this kit features a safety lock nut at the bottom, preventing any movement or displacement. This enhances the stability of your toilet tank, ensuring it remains securely attached to the bowl. The rubber washers on both sides effectively seal the tank, preventing water leakage and protecting the toilet components from damage. Features -Color:Multi -Material:Brass, silicone -Size:8.90X8.90X2.70cm/3.50X3.50X1.06in -Size:7.50X2.70X2.70cm/2.95X1.06X1.06in -Brass bolts: made from brass, these bolts are built to withstand wear and tear, ensuring they remain new over time -Enhanced stability: the included locking nuts at the base of each bolt prevent shifting, providing a secure and stable connection between the tank and bowl -Reliable rubber seals: the rubber gaskets effectively seal the toilet tank to the bowl, preventing water leaks and safeguarding the toilet's internal components -Userfriendly installation: this kit is designed for easy installation, allowing you to replace old parts with minimal effort using just a screwdriver -Complete repair kit: this set provides all necessary components to replace gaskets and bolts, making it a comprehensive solution for toilet tank repairs Package list: 2 x mounting screws + 1 x sealing ring