SF Cable, 3ft DB37 M/F Serial Straight Thru Extension Cable Connectors: 1x DB37 male, 1x DB37 female Fully shielded w/AL-Foil. Gold plating contacts, fully molded ends with thumbscrews. Fully molded connectors with thumbscrew provide you with a quick and easy connection every time. All 37 lines are wired straight through pin-to-pin for ease of compatibility Gauge: 28 Awg / Length: 3 ft