Bostitch BCS1516-1M 15-1/2 Gauge 2" Hardwood Floor Brackets 1000ct These Bostitch floor clips are made from 15.5 gauge high strength galvanised steel. The BCS1516 staples have a medium crown (width) and a length of 5.1 cm. These brackets are primarily used for hardwood floors on concrete or radiant floors. They have also been designed for maximum holding power to prevent the floor from squeaking. The coated surface facilitates penetration and increases holding power, and the chisel tip preserves the look of the work surface during finish applications.