The roof rack comes with everything you need: 4 base feet, 2 cross bars (48" long), and mounting accessories. The roof rack is easy to install. It's completely removable.

FOR 4-DOOR MODEL CARS, TRUCKS, AND SUVS. WILL FIT ON WINDOW FRAMES
CAN BE USED WITH OTHER ROOF ACCESSORIES SUCH AS BIKE RACK, SNOWBOARD MOUNTINGS, ROOF RACKS, ETC.
ADJUSTABLE FITTING FOR CAR ROOF WIDTH UP TO 47-1/4" 
STURDY STEEL AND PLASTIC CONSTRUCTION WITH BLACK FINISH REMOVABLE; DESIGNED TO BE USED ONLY WHEN YOU NEED IT