Surface Finish: Galvanized steel fittings, Item Length: 25 inches 7/8-18 Gewinde Kabel Stewart Warner Car & Truck Individual Tachometers MALLORY VERTEX 25" TACHOMETER EXTENSION CABLE 7/8-18 THREAD STEWART WARNER SCTA Infiniti Cruise Control Units Cruise Control Components Veglia Tacho Connection to tach drive takeoff: 7/8-18 threaded nut w/., 187 tang drive, Performance Part: Yes, UPC: Does not apply MALLORY VERTEX 25" TACHOMETER EXTENSION CABLE 7/8-18 THREAD STEWART WARNER SCTA | Motors, Parts & Accessories, Car & Truck Parts & Accessories Type: Tach Drive cable, Warranty: 30 days Country/Region of Manufacture: United States, Vintage Part: Yes This flexible shaft allows common readily available USA standard speedometer/tach cables ( 7/8-18 threaded lower nut w/.104 square cable end) to be connected and adapted to .187 tang drive (approx. 3/16 drill size slotted hole) tachometer drive output on Mallory or Vertex distributors / Magnetos and other drive takeoffs for cable driven... Upper connection: 7/8-18 male thread w/. Other Part Number: Distributor tachometer drive takeoff cable