The Scientific Pulleys Play panel features 3 sets of gears including high and low ratio gears and the addition of a small idler gear on the third set. The gears themselves have been reengineered to mesh more smoothly and they also run on stainless steel sealed bearings, so the action is very nice. There is an information panel which gives the children some experiments to think about and a Results and Observations dry wipe board insert to record the data. All the mechanics are safely located being shatter-proof polycarbonate windows. All our Play panels are designed to develop a child's visual recognition, role play, alphabetical and numeric skills.