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Bona Mega Semi-Gloss Waterborne Hardwood Floor Finish (semi-gloss sheen) is the revolutionary, oxygen-crosslinking, waterborne wood floor finish for use on heavy-traffic interior residential and commercial floors. Bona Mega’s unique OCP (Oxygen-Crosslinking Polyurethane) formula uses the oxygen in the air as the crosslinker. Bona Mega Semi-Gloss is the world’s leading waterborne finish, providing exceptional durability, beauty, and value for hardwood floors.