The CombBind C210E is a binding machine with an electric punch. It has the binding capacity of 500 sheets and the punch capacity of 20 sheets with LED lights that indicate when there is a jam. The C210E also features the 'GuideRight' alignment facility for a more perfectly aligned punch. The CombBind C210E comes with a Comb Size Guide, which quickly determines the appropriate size for binding. The C210E binds A3 portrait, A4 or A5 sizes.