KidWind Wind Turbine Hub, ten-pack of 12-hole crimping hubs, made from recycled plastic, allows you to turn any DC generator into a wind turbine, Diameter: 2.25 in, Maximum number of dowels: 12, Size of shaft hub press fits onto: 2 mm
Steel Support Ring Stand with 3 Rings, Base 20 x 12.5 cm, 800 g, Rod 500 x 12 mm dia, Support rings 75 mm, Support rings 100 mm, Support rings 125 mm, Contains base, rod, and 3 retort rings for lab experiments