Henry PatchPro, 40 LB, #615 Exterior Concrete Patch, Is A Trowel Grade, Cementitious Topping For Filling & Repairing Areas Of Indoor & Outdoor Concrete Above, On Or Below Grade, Engineered With Portland Cement & Select High Performance Polymers, Readily Bonds To Concrete Surfaces, Easy To Apply, Hardens Quickly, Freeze Thaw Resistant & Produces A Surface Finish That Is Suitable For Foot & Rubber Tire Traffic, When Mixed With Water, The Result Is A Creamy, Smooth Consistency That Can Be Applied By Trowel Or Screed, Bag.