10 OZ, Black Jack, Neoprene Superflash Flashing Cement, High Performance, For Filling, Sealing, Repairing, Pointing, Etc, On All Types Of Roof Surfaces, Can Be Used For Sealing Pitch Pans, Highly Elastic & Able To Cope With Building Movements, 250% Elongation, Use In Wet Or Dry Conditions, Flexible & Watertite Up To 30 Years, Repairs EPDM Roofing.