SharkThane provides a full line of professional polyurethane products and accessories. The Flex Pro, Flex Pro Fast, and Flex Pro Clear series pro are excellent for making molds where undercuts and negative draft require flexibility, or castings that need to be flexible. The Hard Pro, Tool Cast and Hard Pro Clear series yield rigid, tough molds or castings. The Hard Flex Pro series have slight, but limited flexibility along with elastomeric qualities. SharkThane Pigments and fillers are used in conjunction with all series.