Handmade for perfect handling. Hase Handbike. Add hand-drive to the KettWiesel fun-machine or the Lepus comfort trike: The height and angle of the powerful hand-crank assembly can be adjusted to fit the rider, and the whole assembly folds forward for easy mounting. Maximum comfort or speedy sportiness: The choice of chassis is yours. The extra-long Hase recumbent seat provides additional thigh support. Spinning tires? On the contrary: With its differential, the Handbike is ready for the muddiest trail.