The Porta-Nails 1-1/2 in. x 16-Gauge Taped 1M Bright Steel T-head Hardwood Flooring Nails are ideal for nailing tongue-and-groove wood floors (wood floors not included). The nail features a wedge-shaped design with well-defined barbs which prevent the nail from backing out, while allowing for the seasonal movement of a solid hardwood floor. The cupped point enables the nail to cut through the wood and prevent the potential for splitting.