The K 5 LU is the adapter cable from the Lemo output connector of the CCM-L Compact Microphones to XLR-3M. It comes with the CCM-L microphone and CMC 1 L.
The cable is available in any length, it is also sold by the meter and with an open end.
Standard lengths are K 10 LU (10 m) and K 20 LU (20 m).
Specified lengths may vary up to 5% (+/-).