Canoe Car-Top Carrier KitPart #: 11437-7A simple, convenient kit for carrying a canoe or small boat on car top. Includes four supporting foam blocks that snap on boat’s gunwale and help prevent scratches on car top. Two straps with adjusting buckles and clips. Includes 20′ of polypropylene rope and S-hooks to secure bow and stern to bumpers. Straps are sturdy poly web with vinyl-coated clips.WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.