Surf World is stocked up on Phix Doctor Ding Repair Products. Phix Doctor's ding repair kits are filled with everything you'll need to get your board water tight. The Phix Doctor's kits always have more materials inside than the competition. The Dura Resin is a sun powered resin that works on both Epoxy and Polyester surfboards and paddle boards. This product cures extremely fast in the sun creating a water tight seal to keep your board like new.