The onion chopper slicer is great for dicing and chopping onion/vegetable/garlic. Chop different vegetable easily and quickly by pressing. Crafted of reinforced plastic with a stainless steel . Made of food grade plastic and stainless steel , to use. Multi-layer, easy to disassemble and clean, reduces onion vapors to minimize tears. Easy to use, put the onion or vegetable inside the chopping bottom, then press down the palm.