Electric comb binding machine offers effortless electric operation. Simply push the button to punch. It punches up to 25 sheets at a time and binds up to 500 sheets with a 2" comb. It allows you to punch and bind continuously for maximum productivity. Vertical document-loading ensures accurate punch alignment. Adjustable edge guide centers documents with ease. Built-in comb storage tray features document thickness guide for added convenience and help with selecting the proper comb width. Binding machine includes a binding starter pack.