Genuine Plastech VT3 hose for Keihin FCR 4-stroke carburetors sourced directly from Japan! Do not be fooled by all those colorful hoses that so many others offer! Many of these are 1/8" and 3/16" diameter hose, and these Japanese-manufactured carburetors require metric hose sizes for proper fitment and retention. This is direct replacement vent line for the carburetor on your 4-stroke dirt bike and is the same material that is used from the factory (Plastech VT3 hose) from all major manufactures. Includes enough 4.0mm ID hose to do one carb, including the float bowl drain line.