The GBC C450E Combbind Electric Binding Machine is ideal for the average office with medium binding requirements. Paper punching is electronic, making the binding process even easier. The C450E combines a punch capacity of up to 25 80-gsm sheets with a binding capability of up to 450 sheets, binds A3 portrait, A4, or A5 sizes, and is equipped with features such as auto-centring and a paper separator.