Billet pole bracket w/ lock

[JNB421]

Do any of the aftermarket handle pole brackets have a lock to hold the pole up when working on it like stock Superjet?
Thx

 

[KMN]

HSI has one for a square nose. Not sure of any others though.

 

[DrewOregonian]

Cold fusion made one I believe. But they are hard to find. The owner was mentioned selling the tooling/molds at one point.