PRO-GLAS™ Fiberglass Reinforced Filler combines the durability of fiberglass reinforcement with the workability of light weight filler. Specially formulated and approved for SMC and rigid plastic repairs, smooth and creamy PRO-GLAS mixes easily, spreads smoothly and has excellent sanding for a smooth refinish surface. Short-strand fiber reinforcement delivers unbeatable strength and maximum adhesion for tough repairs while the creamy texture maximizes workability. Fiberglass reinforced and easy to use - PRO-GLAS delivers the one-two punch for a winning finish.