Pulley with holes

Use customizer to adapt to your sizes and change the number of holes you want.

A pulley derived from thing 5620, with holes in the internal section to reduce plastic use, and because it looks nicer.

We want to make a windturbine, so a large pulley is needed where the blades are added to the large pulley, and a motor to the small, with a belt going from one to the other, see picture.