The Explorer Comb Binding Machine makes it easy to adjust the depth of the margins, so you won't have to worry about accidentally punching holes through your text or graphics. Punch and bind up to 17 sheets of paper at a time. With 24 hole punching capacity, you can even bind legal sized documents. The 24 adjustable die pins allow you to choose how and where you would like your punch holes to be. This compact machine is a great space saver for offices or classrooms.