Special high gauge chain link Fence is very strong and usually comes in 18 meters length, common heights include 4ft, 5ft, 6ft, 7ft, 8ft, 10 ft, and 12ft. 1. Material: high-quality low-carbon steel wire rod. 2. Surface treatment: electrical galvanized, hot-dipped galvanized, PVC coated, powder coated 3.The edge of the style fence:There are two types of the edge-barbed one and knuckled one. Using special tools to make the edge barbed or knuckled. The barbed edge is more popular compared with knuckled edge.