Leather Mooring Line Chafe Kit - 1/2" Mooring line chafe kits include: Waxed twine, heavy duty needle and (2) 10" pieces of leather pre-stamped for sewing. Used to reduce chafe and extend the life of mooring lines. Natural leather - color may vary. 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.