Ocean & Earth | Fibreglass Repair KitOcean and Earth Fibreglass Repair Kit, the ideal kit for polyurethane fibreglass surfboard repairs. Whether it's a large ding, cracked fin or crease, this kit has what you need to make that repair including; Polyester filler resin 250ml Catalyst hardener Fibreglass cloth 4oz Chop mat Q Cell foam filler Foam block Mixing cup and sticks 2 grades of sand paper Instruction manual