Toilet Seat Fixing: If your toilet seat kept moving, replace the old fixings with our toilet seat screw fixing, fix the seat firmly and no longer slide on both sides Material: The toilet seat extension bolt is made of high quality rubber and the screw is made of stainless steel. Stainless steel won’t rust like metal, won’t slip easily, won’t break easily and last longer NBR Rubber Plug: Rubber grommet with threaded part, when you tighten the screw, it automatically expands and screws into the hole without having to screw the bolt on the other end of the screw Easy Installation: Nut-shaped design, one word, universal Phillips nut, gives you great comfort and can be better installed and disassembled. just insert the toilet seat screws into the toilet mounting holes and tighten the screws Universal: Toilet seat extension screw is 4cm high, 2.2 cm wide at the top and 1.3 cm wide at the bottom. Suitable for 14-18mm hole for 2 toilet seats. Ideal for broken or old toilet seat hinges. Fits