0-5000 ohm Sealed Pot with 3-terminal microswitch Stainless case with spring return lever. The potbox is the throttle in an EV. It tells the controller how much current is needed to be sent to the motor. The potbox's lever arm is attached to the existing accelerator cable. translates foot pressure into a variable resistance to let the controller know how fast you want to go. In addition there is a safety switch inside that helps prevent starting the EV with the gas pedal floored. 0-5K Resistance with Mini Switch for Contactor Control. Dimensions: 3-3/4inch high, 4inch long, 2-1/16inch deep Colour: Silver Material: Metal Package Contents: 2 * Golf Cart Potentiometer Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.