External . are through bolted with internal compression tubes and with tang plates to spread rig loads over a wide area of section. These are selected to suit the angle of the stay, the stay size and the rig size. They are made from 316 stainless steel and are highly polished.
Internal Tangs are available. We have several different types of internal tang options. they are generaly cheaper than the external tangs and tend to have need larger holes in the section. They tend to fit inside one wall of the section