Size: The diameter of the pin inserted into the toilet seat is about 6mm (8mm bottom). The screw length is 47mm/1.9inch and the rubber fixing length is 40mm/1.6inch. 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 fixing 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 economically and conveniently. Material: The connection top 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 Usage: The toilet seat hinge attachment is specially designed for the toilet attachment bracket, which is suitable for most toilet seat hinges standard toilet and top mount. Sold by Briday store