$150/ unit
Better be made out of inconel or titanium
I usually buy the black oxide, and then scrub off the locking compound then squirt some silicon based lubricant on them for corrsion resistance. Never had a rust problem. Stainless can be better, but might want to light lube it with silicone or petroleum jelly if used with other stainless hardware. Dry Stainless on Stainless had a tendacy to gall and then they never come apart. I would say used some anti-seize, but that just doesn't sit right with me on laser scanner.
If you are like me then you are going to find all kinds of uses for these inserts/adapters.
Here was a fun one to get a tribrach+total station mounted on the end of a culvert. Long story for another post.
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