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A gear knob selector, also known as a gear shift knob or shift knob, is the handle on a vehicle's gear stick used to change gears in a manual or automatic transmission. It’s typically located in the center console and provides a comfortable grip for the driver to select gears (e.g., 1st, 2nd, reverse) or modes (e.g., Park, Drive)
 
Key Points:
Function: Allows the driver to shift gears by moving the gear stick, connected to the transmission via linkages