These Tolsen AirXT pneumatic staples are designed for use with 21GA staplers, providing a reliable fastening solution for various assembly tasks. Each staple is crafted from galvanized steel to resist corrosion, featuring a crown width of 12.7 mm and a leg length of 12 mm. The legs measure 0.9 x 0.65 mm in thickness, ensuring a precise fit and secure hold during application. Supplied in a robust colored box, the package contains 10,000 pieces, which is convenient for those handling larger projects without needing frequent refills. This quantity and material choice make them suitable for professionals or hobbyists who require durable staples for pneumatic tools in environments where moisture resistance is beneficial.