GME VOLUME KNOB TX3200 TX3220 TX3400 TX3420 TX3500 TX3510 TX3520 TX3620U TX4500
112004Suits: TX3200 TX3220 TX3400 TX3420 TX3500 TX3510 TX3520 TX3600 TX3620 TX3800 TX3820 TX4400 TX4500
Suits: TX4500 Squelch knob
Replaces earlier models TX32XX & TX34XX, the original knob is No Longer Available.