Same great features as Kleton rubber tie downs, in the convenience of sets16-Pc. All-Purpose Tie Down SetSet Includes: 2 x 9 tie downs (PE367); 2 x 15 tie downs (PE368); 4 x 21 tie downs (PE369); 4 x 31 tie downs (PE370); 4 x 41 tie downs (PE371)Material: EPDM gives the ability to resist degradation resulting from weathering agents like UV rays and ozone making it perfect weather resistant rubberRubber Tie Downs Straps resist cracking and rottingRetains its rebound qualitiesDurable Zinc plated steel "S" hooks