The 110 volt Hardin 5″ Concrete Counter top Polishing Package is the tool of choice to create a polished surface on concrete. This Hardin wet polisher and 5″ concrete diamond pad set is designed to help you bring a shine to your concrete counter top. Diamond polishing pads are used in sets. The 50 grit pad will prepare your surface by eliminating trowel marks, smoothing rough areas and exposing light aggregate.