This cable connects Peltor FLX2 headsets which also have a built in PTT (-111 models) to Caltta PH600 and similar.
PEL-CURLY-FLX2-C6
FLEX headsets were originally using a 5 pin connector. The newer FLX2 headsets are fitted with 6pin connectors. This is a 6 pin FLX2 compatible product.
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Please note these measurements are nominal please get in touch if you require more precise specifications.