I just picked up a set of these rings with the inserts. Every set I've used in the past had 0 stamped on the inserts. This set has one set of inserts with 0 another set with .1, and a third with -5 stamped on the plastic.
As I understand this can be used insted of base shims if needed. Can anyone give me a bit of info on this.
Thanks for all your help
As I understand this can be used insted of base shims if needed. Can anyone give me a bit of info on this.
Thanks for all your help




















































