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Dimension Tol.+/-0.1mm or customized Standard Size:8*8*8mm 10*10*10mm 12.7*12.7*12.7mm 25.4*25.4*25.4mm. 38.1*38.1*38.1mm Surface Quality:10-5 Surface Flatness:1/10 lambda@633nm Extinction Ratio>100:1 Absorption: