A cleanroom version of the Turngrip is possible. it means that we should not use grease. typically the cross pin, has a light sprayed wax coat on them to prevent galling of the stainless steel. in case you want a cleanroom version, then we need to harden all the piece parts. also we need to clean the internal assembly parts before mounting. all these processes will add costs to the full Turngrip. surface hardening is not a kind of coating, it's a a difusion-based thermo-chemical surface hardening process.