Shop for Tools & Hardware at The Home Depot. The Porta-Nails 1-1/2 in. Leg x 1/2 in. Crown, 15-1/2 Gauge Galvanized Metal Hardwood Flooring Staples are proven to give outstanding results when installing 1/2 in. to 33/32 in. solid wood floors. The strength of 15-1/2 Gauge metal ensures complete fastening without bending of the staple. Staples are glued into clips to make loading into your tool quick and easy. For use with Porta-Nails pneumatic stapler models 472A and 465SLT or any flooring stapler requiring 1/2 in. crown, 1-1/2 in. leg 15-1/2 gauge staples.