Deli 3870 is a rubber ring binding machine capable of hole punching and plastic clip binding for loose-leaf documents. It features adjustable hole punching settings, a maximum punching capacity of 21 holes, and a maximum binding thickness of 350 sheets of 70gsm paper. The machine also has a built-in waste paper container for easy cleanup. With its sturdy construction and multiple functions, Deli 3870 is a versatile tool suitable for both personal and departmental use.