The 2x2 piece of tubing is held in place by the hat bracket with pressure from the u-bolts. The hat bracket is shallower than the tubing which allows it to squeeze it to your crossmember. This is a solid aluminum 2" hat bracket drilled to accommodate two 3" u-bolts for 3" tall crossmembers only.
- (2) Heavy Duty Aluminum Swivel top Brackets
- (1) Heavy Duty 10" 2x2x1/4" Aluminum Tube (pre-drilled)
- (1) Heavy Duty Aluminum Hat Bracket
- (2) Stainless Steel 1/2x3x4 5/16" U-bolts
- (1) Stainless Steel 1/2x3 1/2" Bolt
- (4) Stainless Steel Lag Bolts to mount your bunks.