We 1″ hangers made to go underneath the headset locknut on a threaded fork as well as those that clamp on the steerer tube a threadless fork.  The 1 1/8″ hanger only comes in the clamp-to-steerer tube version.  Both are silver.

1″ Threaded Headset Hanger

1 ” Clamp-On  Hanger

1 1/8″  Clamp-On Hanger