Solarez Microlite 2oz Polyester Filler On A Mission $ 10.95 Ast / One Size - $ 10.95 Quantity This product is currently sold out. Lightweight, Sandable FillerFormulated especially for surfboard [urethane] foam repair. For deep dings. Lightweight and easy to sand. Cures either by UV light in approx 3 minutes or by MEKP catalyst in 30 minutes. Comes with 60/240 grit sand pad and spreader card. Not for use on Styrofoam (EPS).