Stricker is a manual wheelchair accessory that makes it possible for users to cycle with their arms. It can be attached to fixed frame chairs without an extra adapter, see also stricker-handbikes.de/en (last checked February 2022)
The handbikes are available in several different configurations and with or without an electric motor at the hub.
With Stricker you can go on bike rides together with friends and family – without moving from your wheelchair. You can also drive downhill without “burning” your hands. A great way to get a workout.
Stricker, stricker-handbikes.de/en (last checked February 2022)