Features: It is a industrial tool. It has high-quality and anti-corrosion. It is widely used to stairs rails expansion screws decoration etc. Aesthetic can play a good role in decoration. To prevent being threaded scrape. Package content: 40Pcs x Cap Nuts Only the above package content other products are not included. Note: Light 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.