Make easy work of onions, nuts and more with the OXO Good Grips Choppers. Press the soft knob and the blades rotate for even chopping. An internal soft bumper absorbs any shock to increase comfort and sound quality. Chop ingredients in the enclosed cup with its soft, non-slip base, or remove the base and chop directly on a cutting board. A tab rotates within the cup to prevent food from accumulating on the side walls. The entire blade cartridge can be removed from the Chopper by simply unscrewing it, so clean up is a breeze. And the blade is symmetrical for ease of reassembly.