Rails are 95 mm long.
Material - graphite
Dimensions (LxWxH): 95x30x20mm
We have designed suitable mandrels for this rail.
For the small rings can also use the beads mandrels.
This video tutorial explains the work with our rails: https://youtu.be/ku8NyuOrORc
We have also created a tutorial, which illustrates the working method of the rails:
(in German language, English version follows)