Rare. Rare. A aero Dynamic Frame Completely Steel. Seems Insane. Crazy once Compared to Carbon Fiber Areo Frames. Not quite Heavy but too Heavy to Manipulate. That is Unless u Had a Front Wheel full Throttle Designed for 700c wheels carrying the Battery. An Ancient thing in the Reality of ebikes which go 70 mph now a days however still confined to the Truths of Flats and their inconvenience Upon therapeutic Rides. That is However If u Had unflatable tires which can ride Rocky turrains Literally. At 20 mph, not bad to get from a to b

700c. Cannondale sz 50