This cable is for the Sennheiser MKH 800 Twin and MKH 8030 combination for DMS
7-pin neutrik XLR to x1 cable techniques low profile 5-pin XLR and x1 custom MZL plug
Channels 1&3 are the Female low profile 5-pin 
Channel 2 is the MZL. 
Cable lengths are:
XLR 5-pin channels 1&3 - 29cm
Mzl channel 2 - 36cm