Up for auction are 14 main jets. Two of each size for doing two carbs on a snowmobile. Sizes 340/350/360/370/380/390/400. I think they fit Mikuni carbs but not positive. I got them with a couple of sleds I bought. One was a 1990 panther. I think they were for that sled. Look good & clean. No reserve & free shipping to the USA!