carburetor air adjust screw / needle Naraku 4-stroke for PWK carburetor

Naraku Performance tuning 4-stroke carburettor needle suitable for PWK carbs. Makes PWK carb tuning much easier. The result is easy tuning and reduced fuel consumption and better drive properties. Specifically for 4-strokes and has nothing to do with those 2-stroke needles that come with flat slide carbs. Suitable for all 21-30mm Keihin PWK, Stage6 R/T, OKO, KOSO flat slide carbs.