The hand crank salsa maker is a great device for makeing pico de gallo style salsa.
This is one kitchen tool I cannot live without in the summer. I grow my own tomatoes and peppers then make some incredible pico de gallo salsa with a little lemon (or lime) juice, Celantro, salt, and those tomatoes and peppers. They recommend roma tomatoes but I use all kinds.
You want to be careful not to overload the Salsa Maker because it will be too hard to turn and make break the thin blades (I did). Cut your onions and other things into small enough pieces first then enjoy that salsa.