Rayson Sd1202 Comb Binder, 19 Holes, Letter Size Max Punch, With Comb Set Binder Manually punch up to 10 sheets of 20lb (80g) paper at a time. And binds up to 200 sheets (letter size) of 80 gsm (20lb) paper with a 22mm (7/8") comb ring. Enhanced accuracy edge guide from 3mm to 6mm for pinpoint punching. Adjustments can be made with ease. Align papers to left of your page using the side margin adjustment. Loads horizontally for accurate easy punching. High Effective and Save Time - Must-go organizer and handy-tool for making planners, organizing client reports, business proposals, craft patterns, and booklets, etc. Durable Metal Construction for Long-Lasting Use.