Set: The expansion nut set contains 2 × stainless steel screw, 2 × plastic expansion nut, and 2 × metal washer.
Material: Made of high-quality stainless steel and nylon, strong and durable, not easy to fall off.
Easy to Install: Insert the toilet seat top fix screws into the toilet installation hole and tighten the screw, which is convenient and quick.
Screw size: 4.8 * 0.5cm; Plastic expansion nut size: 3.7 * 1.7cm; Diameter of washer: 14mm.
General Purpose: Suitable for most toilet seats with fixed hinges on the top, or replacement of damaged and worn toilet seat hinges.