Learn how Levers are used to increase force and lift heavy objects and how the use of levers can change the direction of motion. Build 6 working models including a parking gate, a sew-saw, 2 types of weighting scales and a wheel-barrow. 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.

Sold in sets of three, Park Tool Tire Levers are made of nylon to ensure long life and damage-free operation. The unique design of the TL-1 actually lifts the tire away from the rim and keeps the tube from being pinched. These blue levers are available carded (TL-1C), or in a 25-set counter display.

Explores the challenges, the rewards, the call, and the possibilities of integrating a sincere inner life with an active life of engagement with the pain of the world.