WE LISTENED: Starting May 2015 Our Strings Are Now 25% Thicker, 4mm (.160u0026#34;)nUNIVERSAL FIT: Works on shortboards, longboards, stand up paddleboards (SUP) and inflatable paddle boards (iSUP)nSUPER STRONG: 550lb load rating, pre-cut to right length and easy to tie.nMADE IN THE USA: FREE STICKER INCLUDEDnPROTECTS YOUR BOARD: Used properly, will keep your leg rope from dinging your board. The leash attachment strap will allow your railsaver to rest on the rail, not your leash cord. Must have for your surf board or paddle board.nThis 4 Pack of surfboard leash strings will keep you and your board happy. At over 400lb load rating (800lb if installed in the preferred "doubled over" arrangement, these things will not break on you no matter how heavy your situation is. Cut just to the right length, long enough to get your leash through, yet short enough to not ding up your rail.