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
VSMT Tackle Kit, For use with Vernier Structures & Materials Tester, includes a 50 x 50 x 6 mm and a 50 x 80 x 6 mm aluminum load plate, chain, threaded rods, U-bolts, and other accessories, connecting threaded parts are 1/4inch diameter material and 20 threads per inch