Bostitch staplers take stapling to an all new level. Thanks to a patented spring-power mechanism design, Paperpro staplers deliver 30kg of staple-driving power with the pressure of one finger. Staples up to 25 sheets of paper (80 gsm). Power-Assisted staple driving mechanism 12.5 inch reach - binds sheets up to 25 inches wide. Ruler and sliding guide for superior accuracy. Jam free performance. Uses standard staples.