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 in the toilet hole without wobbling. Easy to install: The toilet seat retainer hinge is easy to install, it only takes a few minutes to fix the toilet seat firmly. You can use it to repair broken toilet lids, which is economical and practical. Material: The top attachment of this toilet seat is made of stainless steel and rubber. The toilet hinge surface is smooth, solid and rust-free. The plastic has excellent toughness, toughness, stability and durability. WIDE USE: The toilet seat hinge attachment is specially designed for the toilet attachment bracket, suitable for most standard and top attachment toilet seat hinges.