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.

These K'Nex kits inspire young minds and satisfy kids' curiosity on how to construct simple machines. Each innovative kit keeps young builders busy and intrigued for hours at a time.

This Bridges Kit builds eight different models and allows kids to work solo or as a team. The models demonstrate lever classes and pulley systems. Includes a compartmentalized storage case with snap-on lid. Curriculum sold separately. Box measures approximately 2.5" x 11.5" x 14.25".