[Size]: The column diameter is 8mm, the height including the base is 38mm, the disc diameter is 55mm, and the chassis is made of 304 stainless steel. 【Perfect Fit】: These toilet seat accessories are equipped with expansion screws, which are stronger and more wear-resistant than other rubber plugs. They fit perfectly into the toilet hole without moving. 【Easy to Install】: The toilet seat fixing hinge is easy to install, it only takes a few minutes to firmly fix the seat. You can use it to repair a broken toilet seat, which is economical and practical. 【Material】: The upper fixing part of this toilet seat is made of stainless steel and rubber. The toilet hinge has a smooth surface, is strong and rust-proof. Plastics have excellent toughness, strength, stability and durability. 【Wide Application】: The toilet seat hinge bracket is specially designed for toilet mounting brackets, suitable for most standard toilet seats and top mounting hinges.