Surebonder Pneumatic 22G Narrow Crown Upholstery Staple Gun with Blow Molded Carrying Case (Air Compressor Needed - Not Included) Uses 3/8" crown, 22G, 5/16", 3/8", 7/16", 1/2", and 5/8" leg length staples Safety mechanism prevents accidental firing Quick release magazine for easy loading Pressure operation of 60 to 100 PSI Air compressor needed, not included with purchase of this tool