Redesigned for greater efficiency, this manual comb binding machine punches up to 20 sheets and binds up to 330 sheets (using a 1-1/2" comb). Machine features punch alignment sensor and jam free management. Vertical punch helps facilitate accurate paper alignment. Low profile comb fingers make continuous punching and binding fast and easy. Machine offers ergonomic, low-force punch handle with document staging area, adjustable edge guide for letter size and oversized sheets and spine size guide. Manual comb binding machine comes with easy-to-follow QuickStep instructions.