Our gauges and items we sell are carefully selected and are of Restoration Quality and are used in our restorations also" This listing is for a new aftermarket tachometer Fits: International Harvester 424 444 2424 2444 Gasoline Tractors Used on: 424 Gas, 444 Gas; Industrial (incl. Loader/Backhoe): 2424 Gas, 2444 Gas This tachometer assembly has a 5/8" UNF cable end and has 12v light also to use or not to use. The International part number it replaces is 388893R91 The diameter is 3 3/8" (85mm) Thank you for looking!