This carbon fiber, compression laminated prop was custom-made for use on human-powered vehicles, and purchased for use on a craft in the Kinetics Sculpture Challenge. I've redesigned my Kintics craft and no longer use it, so this prop can now be yours! Two-blade, 27" Diameter, 22.98" Pitch, 0.72 lift coefficient. Purchased from Free Enterprises (Model No. UWF) - for more details, see http