This is a new Keihin carburetor metal idle adjustment screw for the following carbs.
PWK33
PWK 35
PWK35 AIR STRIKER
PWK36
PWK38
PWK38 AIR STRIKER
PWK39
PWK41
Get rid of the weak plastic screw, I put a small amount of plumbers tape on the bolt before I install it along with the original idle screw spring.This screw is also a bit longer than the original plastic screw & it allows for more idle adjustment. .
 Free shipping is in the LOWER 48 U.S only. Thanks