New Stronger Boom Webbing - with rivet, P clip and 3mm Pure Dyneema for a back up. Does not include the 'O' ring, but you should still have this connected to a control line. If you don't have webbing on your current boom then we suggest you dont change over to the webbing for structural and class rules reasons and stick with using the metal strap (L17) mounted with a single rivet both sides of the boom. To clarify our webbing is class legal to use if your boom originally had webbing on or you have a boom that the original fixing for the kicker and outhaul was a deck eye mounted horizontally on the boom, you will also require a metal ring (L24).