Material: stainless steel + rubberSize: Screw 48*4.6mm, rubber base diameter 28mm, gasket diameter 14mmColour: BlackQuantity: 4Package content: 4 *expansion screw1. High Qualit: The toilet seat fixed screw is made of plastic, rubber and sturdy stainless steel. Excellent toughness, safe, sturdy, not easy to slip, not easy to break and rust, durable.2. Wrapping: Toilet seat fastening set contains 2 pairs of expansion screws, dimensions: 4 cm high, 2.8 cm wide at the top and 1.4 cm wide at the bottom.3. Easy installation: The stainless steel toilet seat hinges are easy to assemble. They are very easy to assemble in a matter of minutes, simply remove old screws neatly in the area and mount the new screws.4. Wide application: These toilet seat screw accessories are universal and suitable for openings of 13-14 mm. Suitable for most standard toilet seats.5. Ideal choice: Rubber extension bolt is ideal choice for DIY enthusiasts, clever design gives you great convenience. If your current seat fittings are loose and your toilet seat moves on the pan, the round hinge plate makes it stable.