[Excellent Quality]All-metal structure, the comb binding machine is sturdy and durable; high-quality hard alloy blade, accurate and fast punching function. [Binding and punching capacity] The binding capacity can be determined according to the size of the consumables using a Round 5.5mm diameter comb spine, 80g 18 sheet punch capacity,The spacing of the holes can be adjusted arbitrarily by adjusting the knife [Special Design]Full-width handle for smooth and effortless paper punching, gravity fed paper punch makes binding documents easier and faster than ever.The base is relatively equipped with rubber feet, which is non-slip and stable [Professional use]It can easily create professional appearance report with high quality binding, including cover and back cover [Easy To Use]easy to operate, and it can punch and staple quickly. binding machines feature vertical pressure system, close coil entirely, and quickly.