Hard As Nails floor finish utilizes highly durable internally cross-linked polymers blended to achieve a harder floor finish film. This unique chemistry results in an high gloss, long wearing finish that cures faster and harder than any other metal-interlock finish. The perfect labor saving advantage for Educational and Retail facilities which have little or no time for floor burnishing. Features Superior wearing. Resists dirt embedment. Non-scuffing. Self-leveling, Self-sealing. 0.0% Free Styrene