Prevent lawn equipment and weed whacker damage to your new or existing vinyl or wood fence, sign and mailbox posts. Fence Armor's patented full post protection is a 2-piece design. Made of strong, reliable, 22-Gauge galvanized steel with a durable powder coated finish. (Recommended fasteners: no 8 x 1 or no 8 x 1 in. stainless steel pan-head screws or pole barn screws).