Mobility scooter throttle levers are designed for easy finger operation; adjustable tension and ergonomic grips minimize h.

https://www.scribd.com/document/1048363197/Why-Adding-A-Scooters-Mobility-To-Your-Life-Will-Make-All-The-Change-127763

Mobility scooter throttle levers are developed for simple finger operation; adjustable stress and ergonomic grips decrease hand tiredness.