Hurst 1630051 White Sidewinder Shifter Knob Equipped with a side button switch conveniently located for driver hand comfort Features a heavy-duty, quick release 12 volt switch normally open 2-1/4 diameter white knob is available with engraved shifter pattern for 5-speed Mustang with 12 mm x 1.75 thread Material of the sidewinder shifter knob is plastic with white polished finish Momentary switch is included with a Hurst shifter knob logo.