Icom IC-M410BB GW 11 Black Box VHF w/White Command Mic 2 Command Mic Ports [M410BB GW 11 USA] Brand_ACR Electronics They are usually used for

They are usually used for small antennas

Removable rubber cap for locking or unlocking application (Key provided)

or inside a metal enclosure

39" overall length

Icom IC-M410BB GW 11 Black Box VHF w/White Command Mic 2 Command Mic Ports [M410BB GW 11 USA] Brand_ACR Electronics They are usually used forIC M410BB GW 11 Black Box VHF with White Command Mic & 2 Command Mic Ports Icoms IC M410BB is a flexible black box mounted on a fixed mount that provides VHF communications for vessels with limited helm space. The supplied white CommandMic controls the radio for essential communications on the water. Clean Installation for Limited Helm Space The IC M410BB consists of a CommandMic and a black box RF unit. Use the CommandMic for all operations,