FiberFlex is formulated with carbon and glass fibers for the strongest, fastest repairs; in many cases eliminating the need for wire mesh re-enforcement. Like our original Uni-Weld Ribbon Rod it sticks to any kind of plastic, but works especially well on TPO's. Cool it off and sand immediately to a fine feather edge. For use with Polyvance's Airless Plastic Welder. This package contains 30 ft. (9.1 m) of FiberFlex. Each stick is 1 ft. (30 cm) long, approximately 1/8th inch thick by approximately 1/2 inch wide.