I have the wrong name for the head cleaner.
I have the CoralVue Octopus Cleaner 150 not the BM version.
Octopus Cleaner 150 fits: SRO-2000int, NWB-150, DNWB-150, Classic 150(int/ext), Classic 150sss, Classic 152-S, DCS150int, POV1, Prime 150int, Elite 150(int/sss), Regal 150(int/sss)
I am going to close this thread and start a new one with the right brand.