Adjustable Paper Margin: You can adjust the margin between 3mm, 5mm and 7mm with this spiral coil binder, ensuring the holes you punch won't be too close or too far to the edge of your document, allowing you to create your professional-looking documents
46 Adjustable Disengageable Pins: Upgraded spiral binder machine features 46 disengaging pins, you can pull some of the pins out to skip holes, great for non-standard page sizes paper, enable you to adjust the machine to any size booklet you need
Durable and Reliable Construction: The spiral coils binding machine is 10.5 -pound heavy-duty and sturdy, made from stainless steel and aluminum alloy, ensuring it hold its place on the desktop without slipping and sliding when punching or binding