The Brackitz Pulley Set includes 77 pieces and directions for 8 contraptions - from a moving draw bridge to a 4-foot flying zip line to a bucket escalator. With pulleys, axles, hubs, hook, crank and string, engineers of all ages will have fun building and cranking contraptions that haul, lift, slide and move up/down. No hard hat required! About Brackitz Inspire imagination and creativity with Brackitz' open-ended toys. Unique, connect-anywhere Brackitz attach to traditional planks at any point, any angle, enabling builders to design any structure they can imagine.Seriously. Anything. From simple to complex, small scale to larger-than-life, gravity-defying, 3D structures, Brackitz award winning family of construction toys puts real-life art, math, science, architectural, and engineering (STEAM) principles into play. Intentionally open-ended toys, Brackitz encourages imagination, unrestricted by step-by-step instructions. The possibilities truly are endless. Brackitz' large planks and connectors are simple enough for girls and boys to attach grow with the child as they're able to imagine and design more complex creations.