3 ft SCSI MDR Micro Centronics 50 Male to Centronics 50 Male Cabl
This is Micro Centronics, NOT the standard SCSI-2 50 pin connector. See eBay listing 116368510500 for that one. https://www.ebay.com/itm/116368510500 

Connect SCSI controllers with MDR Micro Centronics 50 port to SCSI-1 Centronics 50 Pin Devices or visa versa. 

Specifications:

• SCSI Centronics 50-Pin Male
• SCSI MDR Micro Centronics 50 Male
• High quality wire that provides data integrity
• Molded connectors provide strain relief
• 28 AWG Twisted Pair Double Shielded Cable for maximum protection from EMI/RFI interference
• Length: 3 ft