Genuine Plastech VT3 hose for all Mikuni TMX and Keihin PWK Air Striker 2-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 2-stroke dirt bike and is the same material that is used from the factory (Plastech VT3 hose) from all major manufactures. Includes 2100mm (6ft.-10in.) of 4.0mm ID hose that is used for the main vent lines as well as 360mm (1ft.-2in.) of 3.5mm ID hose that is used for the float bowl drain line. Velocity Components is a company that is for riders, created by riders! We're constantly striving to bring products to you that make the ride and ownership experience of dirt biking more enjoyable. Please feel free to reach out if you have any suggestions for products you'd like to see us offer. We're always listening to feedback from our customers!