Size: The diameter of the pin inserted into the toilet seat is about 6mm (8mm at the bottom). The length of the screw is 47mm/1.9inch, and the length of rubber attachment is 40 mm / 1.6 inch. 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 economicallyand practical. Material: The connecting top part 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 anddurability. Widely Use: The toilet seat hinge attachment is specially designed for the toilet attachment bracket, which is suitable for most standard toilet seat hinges and top attachment.