REYSUN specializes in the design and production of trailer accessories including trailer ball mounts, pintle hooks, hitch extenders, rv bumper hitches, hitch adapters, and other hitch accessories. We have a team of professional and experienced technical personnel who can provide customers with high-quality and innovative products. We offer different size of trailer hitch receiver tubes. This trailer hitch adapter series has 3 sizes for customizing. It's standard 2-inch x 2-inch receiver opening and with 3 different length for you to choose, 6-inch, 9-inch and 12-inch. The finish of this receiver hitch tube is raw steel and can be used for custom welding project.