One Blue Planet roof rack strap (20 feet long) with cam buckle. Can be used to strap multiple boards to a car rack. This strap is long enough to use the single strap method as in video below. Please watch the video to do this safely: Use the single strap method for one board only, only if racks are solid and can’t move, the strap is in good condition and the strap cannot slip. If in doubt, always use two straps.