This 4-pack of toilet seat fixings includes hinge bolt screws and expanding rubber top nuts. Made of quality plastic and rubber materials, it features child lock, ventilated design, and a round hinge plate. The toilet seat comes with various features such as child seat/double lid, bidet attachment, heated seat, warm water setting, and LED lights to ease the use of your bathroom.It weighs just 0.08 pounds and can be used in any room, be it your bathroom, living room, kitchen, or utility/laundry room. With flexible rubber bungs, musical tones, and glow-in-the-dark features, this toilet seat fixing is perfect for indoor/outdoor use. Whether you're furnishing your home office/study or foyer, this round beige toilet seat fixing is an ideal investment for your toiletware collection.

Expandable ball is made of black rubber, with solid brass thread inside. White toilet fixings is made of nylon material, long screws and gaskets are made of stainless steel. Sturdy and durable, rustproof and corrosion resistant, better than most plastic fixtures.Put the toilet seat bolts in the toilet mounting holes. The rubber grommets have a threaded section so you can just push them into the holes in the top of the toilet pan and when you tighten the screw it expands and tightens itself into the hole, without the need of a bolt on the other end of the screw.Black Set: Expansion ball diameter: Approx. 18 mm/ 0.7 inch (unexpanded state). Length: Approx. 40 mm/1.57 inch. Screw length: 48 mm/ 1.89 inch. Metal washer diameter: 14 mm/ 0.55 inch. Plastic washer diameter: 28 mm/ 1.1 inch. Suitable for 14 - 16mm hole.White Set:Length: Approx. 37 mm/1.45 inch. Screw length: 43 mm/ 1.69 inch. Metal washer diameter: 13 mm/ 0.51 inch. Suitable for 14 - 16mm hole.CRMYB2L11