this is a brand new 3 position engine kill switch for the 1972-78 Honda ATC90s  by 3 position mean on is in the middle and off is on both sides if you look at you chrome switch bezel you will see the words etched in the metal , the early 1970-71 US90s only used a 2 position kill switch this switch will NOT work in these chrome bezels the hole diameter is much smaller