Expansion nut height x width 38 x 14mm, suitable for 14mm holes. Material: Made of high-quality stainless steel and nylon, strong and durable, not easy to fall off. Purchase Notice: In order to make your toilet work normally, you need to choose the corresponding size to replace it. General Purpose: Suitable for most toilet seats with fixed hinges on the top, or replacement of damaged and worn toilet hinges. Easy to Install: Insert the toilet top fix screws into the toilet installation hole and tighten the screw, which is convenient and quick. Compact design, durable. Colour:white Material:Stainless steel + nylon Package Contents: 8 x Toilet Top Fix Screws Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.