WORKPRO 8016 Pneumatic Staple Gun, 21 Gauge Upholstery Stapler with 1500pcs Staples 1/4 to 5/8, Air-Powered, Rear Exhaust, for Carpentry, Woodworking and DIY Projects - 21 GA Professional Staple GunThe Pneumatic Stapler is air-powered and needs to be connected to an air compressor ( Air compressor is NOT INCLUDED). It works with a pressure range 60 to 120 PSI, max pressure: 120PSI (8.3 bar). - 8016 Pneumatic StaplerThe stapler is compatible with 21 gauge staple. Staple length: 1/4 (6mm) - 5/8 (16mm). Staple width:1/2/12.8mm. Including 500pcs 1/4, 500pcs 3/8, and 500pcs 5/8 Staples. With an ergonomic soft-grip handle, you will feel more comfortable when using this stapler. - Safety DesignThe staple gun is equipped with an upgrade magazine release latch, which is safer and more convenient than before. It can only shoot staplers when it is fully depressed against the work surface, which is designed to avoid accidental nail firing. - Unique Rear ExhaustThe staple gun features a rear exhaust to avoid the air rushing out to your body. It will bring you a more comfortable woodworking experience with its ergonomically designed comfort grip handle. Note: Add oil regularly is needed for all air tools (lubricant included). - Wide ApplicationsThe staple gun is ideal for softwood DIY projects such as Carpentry DIY, picture framing, cable fixing, material repair, carpentry, and pet house DIY, which can satisfy all your necessities.