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
Stem Explorations- Gears Building Set, Age: 8+, Set includes 140+ parts for a single child or team of 2 children to build 3 unique geared models: a Crank Fan, Car Window, Egg Beater, elementary-school aged children will be engaged in understanding Science, Etc.