Nantucket Pavers stair treads are manufactured bluestone-look treads for refacing steps, capping walls, or framing patio edges. The manufacturer lists 48 in., 60 in., and 72 in. lengths with a 12 in. width and 2 in. thickness, available in Blue. Confirm current size and availability before quoting. Nantucket Pavers recommends sand-set installation over compacted free-draining base material.