One new Yag laser Partial Reflector (OC) (1064nm) Packed in original package by Litton, The optic appears to be flat/plano
The approx. dimensions are: diameter 7.5mm by 4.0mm thick.
There is a " > " mark on the side of the optic indicating the side that is to face the HR.
Note: I have no other information on this optic!!!