Pinhole killer. Waterborne polyurethane primer applied with a foam roller or spray gun Fills pinholes in layups or molded parts. White color. Crosslinked for maximum performance. Kit comes with a crosslinker and syringe. Dry sand for a smooth, pinhole-free surface. Dries in 20 minutes, sand in two hours. Clean up with water. Three gallons required for most composite aircraft. Kits include 1/2 oz crosslinker & syringe. Non-Hazmat.