The Progressive Onion Chopper quickly chops and dices onions in one swift, easy motion. The Onion Chopper completely encloses the onion to minimize mess and odors and reducing tearing. This easy to use chopper completely dices onions in just three steps. First cut your onion in half (quarters for large onions) then place the onion over the blades and push down on the handle. The diced onions fall into the storage container with no mess on your counter. The Onion Chopper is dishwasher safe and comes with a lid cleaning tool for even easier clean up.