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 bolt on the opposite side. 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 that have a top-fix hinge. Suitable for 14–16mm holes. ONCE AND FOR ALL: Install the toilet seat and top-fix hinge hardware once. No further adjustments or repairs are needed—these fittings provide long-lasting stability and can last for several years. QUALITY MATERIAL: Made from rubber and metal, the rubber jacket resists dirt and wear, provides excellent expansion, and is less prone to cracking. The 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.