We found HPDB50 pin male ribbon connector for flat wire is stopped manufactured, the main materials is plastic, This type HD50 pin male flat hard disk connector is commonly used with 1.27mm pitch 50 pin flat wire, then connects internal Ultra SCSI CD/DVD or SCSI hard drive to SCSI controller. Pls see SCSI-2 HD 50 Single Drive Ribbon Cable.
50 pin SCSI idc male connector for flat wire
SCSI-2 HD 50 Single Drive Ribbon Cable Made with this HPDB50 male flat wire connector
But now this 50 pin flat wire SCSI connector is replaced by this common HPDB 50 pin male IDC connector, the main materials is steel, nickle-plated over Copper. 
Pls see the SCSI HD50 hard drive cable.
