Features: Easy to install - The toilet seat hinge is easy to install, and it takes only a few minutes to easily fix your seat. (For details on the steps, see the image). Perfect fit - These fixtures on the toilet seat have a rubber plug, which is more flexible and durable than other plastic plugs, and can be perfectly inserted into the toilet hole. High quality - The toilet hinge is made of high-quality stainless steel and rubber, with a smooth surface, strong and durable, rust-proof, and will serve you for a long time. The long diameter of the pin into the chair is 28 x 8 mm, the base diameter is 6.2 mm, and the rubber plug has a long diameter of 35 x 18 mm. It is universal and suitable for most toilets. Please check the pin size before ordering. The set includes 4 toilet seat bolt hinges. Product description: 4 pieces of toilet seat top fixing hinges, 2 pairs of accessories with louver holes, expansion rubber screws, 4 pieces with 50 mm base. Easy replacement in minutes. For a perfect fit, the rubber bundles slide perfectly into the holes, and when you tighten the screws, they will squeeze into the holes to get a good fit. High-quality materials, rust-proof, sturdy and durable, long service life. Material: Stainless steel, rubber. Size: Pin: 28 x 8 mm Base: 6.2 mm Rubber stopper: 35 x 18 mm Color: Silver Delivery: 4 x toilet seat hinges.