This is a replacement Cargo Slat for our Nebo Roof Rack Cargo Slat Kits (JK2 Silver 4-Piece: # 4722052) (JK4 Silver 6-Piece # 4722050) (JK2 Black 4-Piece: # 4722062) (JK4 Black 6-Piece: # 4722060. Cargo Slats provide a platform to hold gear and allows direct mounting of popular sport equipment carriers without requiring the use of a load or cross bar.