EASY TO USE: Insert these toilet seat screws into the toilet mounting holes. The rubber grommets feature a threaded section, allowing them to be pushed directly into the holes on the top of the toilet pan. Tightening the screw causes it to expand and secure itself in place, eliminating the need for a nut on the opposite end. This design offers convenience and saves time. FOR WOBBLY TOILET SEATS: Replace the ineffective plastic inserts that come with new top-fix seats using these durable toilet seat fixing screws. Compatible with most standard UK toilet seats featuring top-fix hinges. Fits 14–16mm holes. ONCE AND FOR ALL: Install the toilet seat and top-fix hinge hardware once. No further adjustments needed—these fittings provide a secure hold and are built to last for years. QUALITY MATERIAL: Made from rubber and metal, the rubber grommets resist dirt and wear, provide excellent expansion, and are less likely to crack. Metal screws are protected by the rubber covering, reducing the risk of rust and extending service life. 100% GUARANTEE: All products include a 12-month warranty. We offer a no-questions-asked replacement or refund guarantee. We are committed to delivering high-quality products that meet your expectations.