PACKAGE INCLUDE - [2PCS M6 304 stainless steel bolts, 2PC compression cone seal, 4PCS rubber washer, 6PCS flat washer, 2PCS hex nut, 2PCS lock wing nuts] *1 packet. The accessories of each package are complete and professionally matched, to provide a better solution for your water tank bolt problem, to ensure that the toilet tank bolt can be durable and no longer leak MATERIALS - Bolts are made of 304 grade stainless steal, which has a good level of resistance to corrosion. Rubber washers and compression cone seal are made from better rubber, which is the good way to prevent water leaks and plug leaks inside and outside the toilet tank EASY TO INSTALL - The toilet tank bolts replacement repair kit adopts quick installation structure. It is perfect fit and easy to install to fixed a leaky tank with this tank bolts replacement kit, even a non-plumber can install it PROTECTION TO TOILET - The rubber cushioning washers in the toilet tank bolts will not damage the tank or toilet base. Have a good performance on making a secure and watertight connection between toilet tank and bowl. SATISFACTION GUARANTEE - If you have any questions about the products, please contact us through Amazon. We will Check the problem first of all and do our best to solve it for you?Provide you with a satisfactory shopping experience!