Check the listing for details. SPEEDOMETER CABLE FITS DOLPHIN GAUGE 5/8" THREAD X 7/8" THREAD AT TRANSMISSION. Condition: New. Listed at 17.95 USD. HERE IS A NEW SPEEDOMETER CABLE FOR YOUR RAT ROD - HOT ROD - . THIS CABLE HAS A 7/8" NUT ON THE TRANSMISSION END AND A 5/8" NUT ON THE SPEEDOMETER HEAD END. MOST DOLPHIN SPEEDOMETER HEADS HAVE A 5/8"X18 THREAD ON THEM. IMPORTANT!! YOU NEED TO MAKE SURE THAT YOUR SPEEDOMETER ACCEPTS THE "5/8X18thread" THREADED NUT ON THE END OF THIS CABLE OR IT WON'T WORK THE TRANSMISSION END IS 7/8"X18THREAD WHICH IS VERY WIDELY USED ON GENERAL MOTORS SUCH AS POWERGLIDE , TH-350 , TH-400 , TH-200 , TH-200R4 , 700R4 , 4L60 AND CHRYSLER TRANSMISIONS 727 AND 904 FOR EXAMPLE.. THESE ARE AVAILABLE IN DIFFERENT LENGTHS 20",38", 63",73", 83" long. THE MOST POPULAR LENGTHS ARE 63" AND 83" . I M P O R T A N T ---L O O K ------------- PLEASE READ THE NEXT LINE--- PLEASE LEAVE A NOTE WITH PAYMENT WHICH LENGTH YOU WANT 100 INCH IS AT AUCTION NUMBER 230993755091