4 Pcs Toilet Seat Hinge Fasteners, Toilet Lid Expansion Screws Toilet Seat Fastener Toilet Seat Screws Set, Toilet Lid Replacement Parts

Size: Black Extension Ball Diameter: 1.8 cm (unexpanded state). Length : 4cm. White screw size: 4.5×0.5cm. Nylon Extension Nut Size: 3.7 x 1.8cm. Washer diameter: 1.4cm. (The detailed size of each toilet seat nut is in the picture, please measure before purchasing to ensure your toilet seat works well)Excellent material: the stretch ball is made of black rubber, the white screw with solid brass thread inside is made of nylon, long screws and gaskets are made of 304 stainless steel, soft washers are made of ABS plastic. Sturdy and durable, rust and corrosion resistant, better than most plastic fasteners. Anti-rust design: plastic washers won’t rust, better than metal washers. When you tighten the bolts, the washers crush into the holes, you have to be careful not to tighten the bolt so much that it pushes through the washer. The screw has a solid brass thread inside that is non-slip and rust-proof. Easy to use: Place the toilet seat bolts into the toilet mounting holes. The rubber grommets have a threaded section so you can simply push them into the holes in the top of the toilet bowl and when you tighten the screw it expands and tightens in the hole, without the need for a bolt on the other end of the screw. Convenient and time-saving.Universal: 2 Pairs/4 Pieces Toilet Seat Replacement. If your toilet seat keeps moving, please use these toilet seat fixing screws to replace the unnecessary plastic inserts that come with a new fixing seat on top. Toilet seat fittings fit most standard toilet seats with top fixing hinges, toilet seat hole 14-18mm.