This marine-grade stainless steel U-Bolt, with a 6mm rod and a 32mm internal width, is shaped like the letter "U" and comes with threaded ends and a backing plate. It is commonly used as an attachment point for lines, hardware, or rigging on boats and can be bolted through the deck. The package includes one U-Bolt, four nuts, and one backing plate, and the height can be adjusted using two of the provided nuts.