If you have a Rhino Heavy Duty Crossbar system or a Prorack Trade Crossbar and would like to mount Rhino-Rack’s range of Kayak and Canoe Carriers including the Nautic 570 and Nautic 571, you will require the HD-FK1 fitting kit.• Attach the Nautic 570 and 571 Kayak and Canoe Carriers to your Rhino Heavy Duty Bar
• Attach the 562, 564, 566 to your Heavy Duty Bar
• Comes with all the necessary items required