21010000033 CONN. MICRO JACK ACCES.CAP (COVER), PROTECTIVE M12 21010000033 is a premium microphone jack accessory that featuring a CAP (Cover), Protective type made of Metal material. Designed in M12 shell size, available in Silver color. Manufactured by HARTING in the Har-Speed M12 series. Compliant with ROHS standards and available in BULK packaging. Perfect for enhancing connectivity and durability in professional audio systems.