Jon Boat Deck Mount. Condition is New. Shipped with USPS First Class. These angled cornered brackets are sold as a pair and are used to join square aluminum tube together by your choice of bolts or welding. Cnc plasmacut using 1/8” aluminum. Stock angles are 15,30,45 and 60 degrees. Custom angles can be made at no additional charge. Please refer to the diagram to see where the angle is measured and leave a note on what angle you need at time of purchase.