MCS-905493 - Brass. Allows easy adjustable air mixture screw at the tip of your fingers. No screwdriver necessary. Will replace stock air mixture screw on all H-D with Keihin CV carburetors. Incl. screw; spring; washer and o-ring.

Fitment:
90-06 B.T.; 88-06 XL. With CV carbs (NU)