Freeman FS-21K 15.5-Gauge 2" Glue Collated Flooring Staples with 1/2" Crown (1000 count) are designed for the installation of tongue and groove hardwood flooring such as cherry, oak, maple, and walnut. These flooring staples are made of steel for strength and durability, and are perfect for indoor use. They are the pinnacle of quality and value, and are compatible with most 15.5 gauge flooring nailers capable of firing 2" glue collated staples with a 1/2" crown – such as Freeman's PDX50C, PDX50Q, PFL618BR, and PFL618C. Each box includes 1,000 flooring staples to ensure you have plenty of fasteners at your fingertips while on the job.