General description The Pcs Toilet Seat Hinge Fixings set includes essential components for securely attaching toilet seats. This universal kit is designed to fit most standard toilet seats with top fixing hinges, accommodating hole sizes between 14-18mm. It replaces ineffective plastic inserts, ensuring a stable and reliable installation. Technical specifications Black expansion ball diameter: 1.8 cm (unexpanded state) Length of screws: 4 cm White screw size: 4.5 x 0.5 cm Nylon expansion nut size: 3.7 x 1.8 cm Washer diameter: 1.4 cm Material: Rubber, ABS, Stainless Steel, Nylon Quantity: 2 pairs / 4 pieces Installation Insert the rubber nut into the holes first. Insert the screws through the washer and plastic plate into the rubber expansion nut. Tighten the screw and cover the stainless steel base. Align the spindle and insert it into the hole of the toilet lid. Usage Ideal for replacing old or ineffective toilet seat fixing screws. Ensures a secure fit for toilet seats that may otherwise shift or move. Easy to install without the need for additional bolts on the other end of the screw.