Elenco Pulleys ENG-M05. Learn how pulleys can be used to transfer force with reduced friction and how to increase force or speed at amazing levels. Build 5 working models including an oil drill, a stationary bike cranes bridges and a machine blender. A 36 page activity book is included with innovative experiments and detailed explanation of the different technological principles applied! Booklet with detailed building instructions also included. WARNING CHOKING HAZARD- Small Parts. Not for Children under 3 yrs.
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