Features & Details Staples Compatibility: This 20 gauge pneumatic staple gun is compatible with 50 series fine wire staples - featuring a 1/2-inch (12.8mm) crown size and 1/4" to 5/8" (6mm - 16mm) staple lengths. Operating Pressure: 70-100 PSI, Air Inlet: 1/4" NPT High Loading Capacity: Our air stapler gun features a large-capacity loading magazine that can hold up to 110pcs staples at a time, ensuring efficient work without frequent reloading. (Staples not included; please purchase separately) Easy to Use: Enjoy greater control with the sequential firing mode, which prevents accidental firing for safer operation. The rear exhaust design and safety trigger switch further enhance user safety and convenience Comfortable Grip: Equipped with an ergonomic non-slip rubber grip and lightweight build, this light-duty air powered staple gun offers offers better control, soft and secure hold that reduces hand fatigue during extended use Wide Applications: Ideal for upholstering, woodworking, fabric attaching, light-duty furniture assembly, wooden frame assembly, decorative trim fastening, picture framing, and more DIY projects. It needs to be connected to an air compressor for use (air compressor not included).