21010102028 CONN. MICRO JACK ACCES.SEAL M12 21010102028 is a premium microphone jack accessory that featuring a Seal type made of Thermoplastic material. Designed in M12 shell size, available in nan color. Manufactured by HARTING in the 21010102028 series. Compliant with ROHS standards and available in BULK packaging. Perfect for enhancing connectivity and durability in professional audio systems.