High-quality materials:The expansion nut is made of stainless steel and high-quality nylon, which is used to fix the toilet lid and is durable. Size:The length of screw is 4.5cm/1.77in, nylon expansion nut size is 3.8 x 1.7cm/1.49x0.67in, washer diameter is 14 mm / 0.55 inch. Set: The expansion nut set contains 2 × stainless steel screws, 2 × nylon expansion nuts. Utilities :A strong, reliable and sturdy fixing kit designed for toilet bowl fixings. Applies to:Toilet seat hinges screws Ideal for broken or old toilet seat hinges.Suitable to most standard toilet seats with top hinge. Quantity: 2stainless steel screw 2nylon expansion nut Size: Screw:6mmX45mm Nylon: 38mm X 17mm Note: Other items are not included, the color is based on the first picture, and other pictures only show the effect Due to the differences between different monitors, the picture may not reflect the actual color of the item. Due to manual measurement. Please allow deviation. Thanks!