40 Pack SKU: 1823-30
Single SKU: 1821-30
Why do we call them "wheel-hubs"? It's because they can be wheels for vehicles, or a hub for wind turbine rotor. Their splined holes allow dowels to press securely into them, so the dowels and wheel-hubs turn together.
As a Wind Turbine Hub:
Create a wind turbine hub (the part that holds the blades and spins) by attaching two wheel hubs together using #10 x 1in screws and nuts. Click on this guide to see how.
Wheel Diameter: 86mm (3 3/8")