ASTHA S-980 Manual Heavy Duty Plastic Comb & Plastic Strip Flexible Margin Depth Spiral Binding Machine has designed for professional documents comb bound punch up to 28 sheets (70g) at a time in your office, Ideal for shared use where the regular binding is required Binds up to 500 Sheets A3, A4, and A5 sheets using a 24pcs disengagement pins for 3:1 Pitch Pull Push Pins, 25 holes for F4 size, 340mm, Manual punch full-width handle for smooth and effortless paper punching and bind, 28 Sheet punch capacity, With all selectable pins, punch small paper like A4, A5 & With paper extension structure, can punch A3, B4, etc. The gravity-fed electric paper punch makes binding documents easier and faster than ever, Handy comb storage compartment, Quickstep process for error-free fast binding,