Swingline GBC CombBind C12 binding machine.

Function: It is a manual office binding machine used for punching and binding documents with plastic combs. 
Capacity: The machine features a punch capacity of approximately 12-20 sheets (depending on usage) and a binding capacity of up to 330 sheets. 
Features: Includes a color-coded document size guide to help select the correct spine size and a built-in vertical punch for accurate paper alignment.