10.1 OZ Tube, Gray Self-Leveling Polyurethane Sealant, Construction Grade Sealant Used For Sealing Cracks & Joints In Horizontal Concrete Surfaces, Self-Leveling Formula Provides Superior Adhesion, Flexibility & Durability, Use For Sealing Expansion Joints In Concrete Slabs, Sealing Cracks In Concrete Floors, Driveways, Patios, Steps, Basements & Pool Decks.