Hand tools for concrete work, namely, floats, trowels, groovers, edgers, darbies, drags, placers, paving straightedges, gliders, hand-operated screeds, step tools, curb tools, stamps, concrete finishing brushes, and concrete finishing brooms; Handles for hand-operated hand tools; Brackets for connecting handles to blades of concrete finishing tools; Adapters for connecting handles to blade assemblies of concrete finishing tools