If you take a picture of the light and speedring mount, and post it here, someone will likely be able to tell you what will work with it. There is not speedring that will work for every single light ever made. You just need to determine what type of mount your light uses.
|Steamin' Mad by ahrensjt|
from Angered Subjects (Street Photography)
|Smile by Olymguy|
from Ultra Asian Indian Female Faces
|Space Shuttle Cockpit- by vbuhay|
from Aircraft Control Stick