 
        Horizon Hobby
DuBro Heavy-Duty Threaded Ball Link 4-40 (DUB259)
This high quality ball link offers smooth, secure operation with less slop.
 It's adjustable so you can remove the link from the ball assembly simply by
 losening a screw.
Includes:
1- adjustable swivel ball link (black plastic, self-threading for
 4-40 rod, 1 1/4" in overall length)
 1- burnished brass ball with a #4 hole in it
 1- 2-56 x 1/4" roundhead screw for adjusting ball link
 1- brass spacer
 1- 4-40 locknut
 1- 4-40 x 5/8" socket cap screw
