✔ Copper Materials: This sealing flat washer is made of high-quality red copper, which is wear-resistant and durable. They provide a tighter seal, greater conductivity and higher heat resistance than steel and rubber gaskets.
Compatible with 2014-2018 Chevy Silverado GMC Sierra Double Cab. PREMIUM QUALITY – Crafted with precision from 24 (0.025″) or 26 (0.018″) gauges thickness stainless steel with mirror polish surface. 4 pieces set.2 pieces for each side.