Replaces stock plastic hot start nut on Keihin carburetors. Billet aluminum, stronger than stock. No more stripping or breaking causing air leaks like the stock one. Small 10 mm head makes removing and reinstalling easy along with a knurled body making it easier to get started when threading with your finger tips. Anodized red.
DOES NOT FIT DOWN DRAFT AND HORIZONTAL CARBURETORS.