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$110.00
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CONFIGURATION: DISC, PLANE-PARALLELDIAMETER: 25.00mm + 0.00mm /- 0.10mmTHICKNESS: 3.00mm +/- 0.10mmPARALLELISM: 3 ARC MINUTES MAXIMUMFLATNESS: 2 WAVES MAXIMUM AT 0.633um, 2 FACES.SURFACE QUALITY: 60-40 PER MIL-PRF-13830, 2 FACES.MATERIAL TYPE/QUALITY: ZINC SELENIDE, LASER GRADE.COATING: NONE, UNCOATED SUBSTRATE.