3mm Laser cut Aluminium folded into a 50mm high x 70 mm wide foot - length for the bundutop rails are 2000mm - long enough to pick up the strength present in the extruded sides of the tent. 
Brackets are pre-drilled to accept sealed head rivets, 
Kit includes a 3rd laser cut wind deflector, Rivets, and a Tube of Sikka Flex adhesive sealant. Instructions available at www.toughtouring.com.au