Size: rubber sleeve length 4cm/1.57inch, metal screws 4.8cm/1.89inch, metal washer diameter 1.3cm/0.51inch. Fits most standard size top hinged toilet seats. Easy to Install: The toilet seat fittings feature a Phillips head, easy to install and remove. Perfect choice for DIY enthusiasts, smart design and easy installation. Material: Toilet seat screws are made of high quality rubber and metal, much better than most plastic fasteners on the market. Toilet Seat Replacement Kit: Ideal for broken or old toilet seat hinges. Fits most standard size top hinged toilet seats. Perfect Design: The rubber plugs slide perfectly into the holes and when you tighten the screws, they are pressed flat into the holes to ensure a snug fit.