Office folks and crafters, this TIANSE binding machine is absolutely perfect for creating professional-looking documents and projects! The manual punch handle can handle up to 20 sheets of paper at once, and the 46 disengaging pins let you customize exactly where the holes go. But the real game-changer is the electric coil inserter - it automatically threads the plastic coils through your punched pages, saving you so much time and frustration. It comes with 100 pieces of 5/16-inch black PVC coils and a crimping plier to finish the ends. Works with Letter size (42 holes), A4 (46 holes), A5 (33 holes) paper, and you can adjust the margin to 3mm, 5mm, or 7mm. The full handle design works for both left and right-handed users, which is pretty clever. Just remember to press the handle all the way down when punching - no stopping halfway! The machine comes pre-lubricated (wipe with the included paper first), and it's built to last with proper care. Whether you're binding reports, presentations, photo books, or craft projects, this machine makes the process so much smoother than manual methods. If you're tired of struggling with comb binders or paying for professional binding, this TIANSE system delivers professional results at a fraction of the cost!