top layer: American Walnut ; Mixed Hardwood Base Plywood Engineered Walnut Flooring:Size: 900-1860 x 90-190 x 14-21mm, top layer: 3-4mm.Species: Oak, Iroko, Doussie, Maple, Cherry, Walnut, Teak, etc.Finish: Flat /Brushed; Unfinished /Prefinished.UV lacquered, Natural Oiled, etc.Grooving: T&G or Click System. Micro bevelled American Walnut Parquet