Punch up to 20 sheets of 20 lb. paper with this 14" electric machine. The manual comb binder has a binding capacity of 3/16"-2". This Akiles machine is a great way to professionally finish documents. (Item# MB1E) Pitch - 9/16”, Punch - Electric, Punching Length - 14” (24 dies), Hole Punch - Rectangular (5/16” x 1/8”), Comb Binding Capacity - 3/16” – 2”, Punching Capacity - Up to 20 sheets of 20 lb. paper