Here's what other sites are saying:
The Salomon SNS/NIS interface adapter plate allows you to mount SNS bindings to your touring skis if they're equipped with NIS plates.
- Mountain Gear
The SNS Interface Adapter is a thin composite plate with pre-drilled holes to match Salomon Profil and Pilot race bindings. The plate enhances the performance when Salomon bindings are mounted on skis with NNN-NIS plates. Prevents over-tightening of mounting screws Can help prevent Pilot bindings from icing up in certain snow conditions