The countersunk fasten gasket is made of copper, it is not easy go rusty, it is sturdy for long service life.
Fastening Efficiency: The bearing exterior of the bolt is large, and the lock is firmer.
The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.
Wide Range of Applications: This washer can be installed on many different types of materials. Wide range of applications.
Countersunk Conical Cup Washers, Fits Countersunk Screws & Bolts, Smooth Burr-Free Edges, Secure Fit