Shop our wide variety of Chain Link Post Caps which are available in steel and aluminum versions and in silver (galvanized & aluminum), black, brown, and green! We have post caps for 1-3/8", 1-5/8", 2", 2-1/2", 3", 3-1/2", 4", 6-5/8", and 8-5/8" fence posts! Chain Link Post Caps are used to cover the top of round chain link posts and come in three main styles - Acorn, Dome, and Bullet Caps.