FLEXIBLE STAPLE CHOICE- Compatible with 8 different STAPLE SIZES, this stapler meets most requirements for your binding needs. Compatible with (1/4”, 5/16”, 3/8”, 1/2”, 9/16”, 5/8”, 13/16”, 7/8”) staples, we provide 4000 free staples, including 7/8”*2000, 5/8”*1000, 1/2”*1000..LABOUR-SAVING DESIGN- Our heavy duty stapler design is engineered with safety and ease of use in mind. This ergonomic design makes even Heavy Duty binding smooth and wrinkle-free, for smaller and larger users alike..SUPER CAPACITY- With a maximum capacity of 100 staples, this heavy duty stapler can bind up to 240 pages(60g) without reloading. Suitable for jobs that are more demanding than conventional staplers can handle..3.15" USEFUL THROAT-The maximum depth of this stapler is 3.15"(about 80mm). The scale on the top of the plate can clearly remind you of the depth of paper feeding, and you can choose the desired staple position at will..ADJUSTIBLE PAPER GUIDE-The heavy duty stapler has a flexible paper guide and it can be easily adjusted, ensuring that the paper is smooth and wrinkle-free during use, improving the binding quality.