The “Cross” connector is another very commonly used part. This is a two-piece part that can easily be used to add another rail to your fence or anything else you need. A nice design aspect about this part is that both halves are the same part, so no need to worry about needing a specific half. If it does not seem to align with the holes, just rotate one of the halves and bolt it together. The bolted box section of the part allows for large force transfer between the connector and pipe for a very strong assembly. The part itself acts like a lock washer so the bolts stay tight in all hot and cold weather cycles. Square holes allow for the use of carriage bolts that are supplied with the part. Available in 2 sizes, and 2 finishes. See the .PDF for more technical specifications.