Premium MaterialThe toilet seat hinge clips are made of rubber and stainless steel, rubber is more resistant to dirt and wear, and not easy to break. Under the protection of rubber, the metal screws are less prone to rust and durable for long-term use. Easy to install The rubber grommets have a threaded section so you can simply install them insert into the holes at the top of the toilet bowl. When you tighten the screw, it expands and pulls into the hole without the need to screw in the other end of the screw. Hinge Plates The round hinge plate can make these toilet hole bolts more rigid and stronger. When tightening the screws that the washers push into the holes, you must be careful not to tighten the screw so much that it pushes through the washer. Wide ApplicationsA solid mounting kit , reliable and sturdy specially designed for toilet mounting brackets. Toilet lid seat fittings fit most standard toilet seats with Top-Fix hinges. Convenience and time saving. Package includes You will get 2 Pieces of toilet hinge blind hole fittings with expansion rubber bolts, nuts, washers, easy for your use daily. You only need to assemble the upper fixings of the lid and toilet seat hinge once, which can be used for several years. Product description Product information - Product name: toilet lid fixing hinges - Material: rubber , Stainless Steel - Size: 45mm Package includes: 2 Pieces x Blind Hole Fittings with Expansion Rubber Bolts Nuts Washers Features: - The toilet seat hinge fittings are made of high-quality stainless steel and rubber, which are sturdy and durable. - The stopper rubber slides perfectly into the hole and holds well when tightening the screw. - Round hinge plate can make these toilet hole bolts stiffer and stronger. - The rubber washer of the screw has a threaded part that can expand and tighten when pushed into the toilet hole. - Size: 45mm, perfect choice, design clever, easy to use, easy to disassemble and install. - Ideal for most standard fixed top hinged toilet seats.