SmartSteer ergonomic spinner knob - Bever Mobility

SmartSteer is an ergonomically designed multifunction spinner knob for disabled. It operates secondary functions like turn signals, wipers/washer

Mobility Engineering - Manual Spinner Knobs

Spurtar Steering Wheel Knob, Universal Car Suicide Knob Power Handle Spinner Fit for Steering Wheel, Cars, Semi Truck, Forklifts, Tractors, Boat, and Golf Cart – Black : Everything Else

Steering devices for disabled drivers

SmartSteer ergonomic spinner knob - Bever Mobility

Bever - Smartsteer Secondary Control - BAS

Spurtar Steering Wheel Knob, Universal Car Suicide Knob Power Handle Spinner Fit for Steering Wheel, Cars, Semi Truck, Forklifts, Tractors, Boat, and Golf Cart – Black : Everything Else

Sure-Grip Spinner Knobs

Steering Aids, Devices and Systems for Cars & Wheelchair Vans

Manufacturers - Driver Rehab Center

Fadiel Ergonomic Radial Accelerator Hand Control System