Humanized Handle: This sheets book maker features a humanized handle that applies only steady pressure, punches holes in up to 20 sheets of 80 gsm ( 20 lb. Feature: 1. Multifunctional: This book binding machine can be used to bind A4 and A5 sized paper, and you can easily customize the paper margins to 2.5mm, 4.5mm, 6.5mm to create professional looking pieces. ).
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