Feature ❤ Easy to install in minutes, just remove the old bolts and install the new bolts ❤ Quality rubber, smooth surface. Excellent toughness, not easy to break br /> Diameter: 14mm / 0.55inch Length: 40mm / 1.57inch 4 silver steel screws Diameter: 6mm / 0.23inch > Length: 50mm / 1.96 inch 4 small silver metal washers Diameter: 14 mm / 0.55 inch 4 large white ABS plastic washers Diameter: 22mm / 1.1 inch How to Install Toilet Seat Hinge Fasteners 1. Simply push them through the holes. 2.Insert the supplied washers. 3.Screw from the top. � Warm Tips: 1, Comes with 4 plastic washers, when you tighten the bolts, the washers will crash into the holes and be careful not to tighten the bolt so much that it pushes through the washer. 2, The round hinged plate makes these toilet hole screws very sturdy and ideal if the current seat fittings are loose, this allows the toilet seat to move only on the pan.