Mixture screw for carburetor. Fits VNX with frame number after VNX1T 75919, VSX, VLX and VSE model vintage Vespa scooters (P200, Rally 200). This screw has finer threads than the standard screw, and is the correct replacement for all the new 20/20 and 24/24 SI carbs.
For mixture screw spring, see 85285.