This is a BRAND NEW replacement potentiometer for your Vectrex controller. This is a common failure part in the Vectrex controller with normally the spring inside of this part breaking causing the shaft not to return to center position. The springs can be purchased separately or this potentiometer can be replaced altogether. This part is made to the exact specifications as the original and took two years to develop since there are no companies making potentiometers such as this any more.