Dear Viridian : Gyger makes the Replicant 100 for Ortofon and in its site you can read the Replicant 100 specs and use a radius of 100, that's why the name Replicant 100.
Giger makes other model ( s) with bigguer radius. Here you can read the overall information about coming from an expert retipper:
https://forum.audiogon.com/discussions/replicant-100-stylus/post?postid=2326742#2326742
https://www.ortofon.com/mc-diamond-p-1000-n-1579
R.