| Brand | Unbranded |
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Check the listing for details. Berylliim Oxide Beryllia Ceramic disk set 1" dia. and thermal mirror mount. Condition: Used. Listed at 39.00 USD. Due to the thermal properties of Beryllia, I think this could be for drawing heat away from high powered laser mirrors and transferring it to the. 625" dia. I'm guessing you would glue the mirror with a thermal adhesive.