Supremely easy to use the C20 manual binding machine uses classic CombBind® spines to firmly secure bound documents. Binds up to 330 sheets, with a 1 1/2” spine, but can also be used for smaller projects. The punching function can cleanly pierce up to 20 sheets at a time, and has a full-width handle for better ergonomics, making it easier to punch. The C20 punches and binds standard letter, oversize or A4 sheets. A color coded document and spine size guide are printed on the machine face to simplify operation and ensure perfect binding results.