Functionality< / P> ► Easy to install in minutes, just remove the old bolts and insert the new bolts ► Fixed plug-in expansion screws in the WC cover ► Quality rubber, smooth surface. Excellent toughness, does not break easily ► Universal uses, ideal for broken or old toilet seat hinges Specifications and Packaging 4x Black rubber tube nut< /p> Diameter: 18 mm (thicker), 14 mm (thinnest) < / p> Length: 40 mm 4 screws in silver steel Diameter: 4.7 mm / 1.19 inch Length: 48 mm 4 small silver metal washers Diameter: 0.59 inches < p>4 large white ABS plastic washers p> Diameter: 1.18 inch How to install toilet seat hinge fixings? < / p> 1. Just push them through the holes.< / P> 2. Wear the washers supplied.< / P> 3. Upper screw.< / P> 4. When tightening the bolts, the washers go into the holes and care must be taken not to tighten the bolt so much that the washer goes through.< / P> Note: < / P> These toilet seat hinge screws are suitable for 14 to 16mm hole. Please confirm the hole