The Porter-Cable US58 1/4-Inch to 5/8-Inch, 22-Gauge C-Crown Upholstery Stapler is an easy to use pneumatic stapler with plenty of useful features. It uses standard Senco C Type 22-gauge, 3/8-inch crown staples to get the job done right, and it includes a 1-inch nose extension for those tough to reach areas. The high-capacity bottom-load magazine handles 185 staples, and the driver guide moves back to easily clear jams from the magazine. The US58 stapler requires 70-120 PSI air pressure, so it will work with most air compressors.