Seller notes

1 Air Valve extender shift knob top is 1/2 x 13 common thread ****MUST BE OLD VINTAGE PIN STYLE OF SEMI TRUCK AIR VALVE **** Add shift knobs to your PIN air valve. fits 3/8 inch inner diameter ADD SHIFT KNOBS TO YOUR AIR VALVES Aluminum W/ Chrome plating Comes with Roll PINWhen installing use gloves as threads can be a bit sharp. Tips To remove your old pin you can use a punch or a small star tool with hammer Use some painters tape or other tape to protect the chrome finish and make the hole in ...

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