Robot Engineer, With durable storage case and illustrated storybook, Dimensions: 14.7x6.3x9.4in, The robots have moving parts, wheels, and gears, simple machines and gear trains, colorful plastic building pieces make it easy for small hands to put the models together
Pulley, Single Sheave, Pulleys wheels are made of plastic and mounted securely in an aluminum housing with a hook on both the top and bottom for suspension, Size: 50mm