Push, Pull and More tests the effects of increased and decreased pressure on a variety of included and suggested objects. The syringe is the perfect tool to increase pressure by pushing and decrease by pulling. It is easy to observe the results either inside or outside the syringe. This contains a full 60cc professional syringe with plug (no needle, of course), balloons and a cork. You can supply water, vinegar, baking soda, marshmallows, or any number of additional objects and substances on which to test the effects of pressure. Six-page booklet includes full instructions, explanations and experiment suggestions. PUSH, PULL AND MORE Kit.............$475 ea.