Infinitely adjustable Ring thickness ...
thread:
ring diameter:
Infinitely adjustable
Ring thickness of the iris: 1.5mm
Horizontal level bars
M.18 or M.22
Adjustable
A: adjustable from 2.4 - 4.4mm
B: adjustable from 4.0 - 6.0mm
C: adjustable from 2.9 - 4.9mm
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