Brand SAE
Model SAE SDD-5000

Check the listing for details. SAE 5000 Slider Control And Knob. Condition: Used. Listed at 34.99 USD. This is the slider control from a SAE 5000 noise control unit. I'm not sure but this may work for other units as a volume, balance or EQ control. The part information is in the pics. I know these get broken off on the equipment. What you see is what you get

$20.99
$34.99