Designed to teach the concepts of force and mechanical equilibrium as they relate to pulley arrangements Used to illustrate the important concepts of mechanical advantage and the conservation of energy It includes 2 threaded metal vertical support rods, a metal crossbar, 2 crossbar clamps, a 90 degree clamp, 3 Single pulleys, 1 quadruple pulley, 1 triple tandem pulley Also includes 1 wheel and axle, 3 pulley clamps, 10 slotted weights ranging from 10 grams to 500 grams, 3 weight hangers and pulley cord (100 ft.) and a complete laboratory manual Measures 36" length by 8" width by 8" height Large enough for demonstration in the classroom, the large pulley demonstration is designed to teach the concepts of force and mechanical equilibrium as they relate to pulley arrangements. The model can be used to illustrate the important concepts of mechanical advantage and the conservation of energy. It includes: 2 threaded metal vertical support rods, a metal crossbar, 2 crossbar clamps, a 90 degree clamp, 3 single pulleys, 1 quadruple pulley, 1 triple tandem pulley, 1 wheel and axle, 3 pulley clamps, 10 slotted weights ranging from 10 grams to 500 grams, 3 weight hangers and pulley cord (100 ft.), and a complete laboratory manual.Product Dimensions (L x W x H): 851 x 76 x 132 MMProduct Weight: 1 LB