rare 4" x 24" cherne test ball. Bought used and used once for a test, don't need it anymore.
Still pretty good, no mark or cracks, still hold air pretty good.
I know what it looks like and I know what you are thinking, but believe me it's not it... if you don't know what it is, you don't need it.
If the ad is still up, that mean it is still available.
