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3: The reference value of E-step is 385
Package Content:2 x Revolving Handles
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CNCOLETECH 18mm ZnSe Focus Lens for CO2 10600nm 10.6um Laser Engraver Cutter Dia:18mm FL: 4" 101.6mm Dia:18mm FL:101.6mm/4" Size:Dia:18mm FL:101.6mm/4" 3: The reference value ofCNCOLETECH 18mm ZnSe Focus Lens for CO2 10600nm 10. 6um Laser Engraver Cutter Dia: 18mm FL: 4" 101. 6mm ZnSe focus lens for Co2 laser Parameters: Material Znse Wavelength 10. 6m Diameter Tolerance 0. 1mm~ 0. 15mm Thickness Tolerance 0. 1mm FL Tolerance 90% Surface Figure Product Features Material: Hight quality Znse crystal Focal Length: 101. 6mm 4" ; Dia: 18mm 19mm 20mm 25mm optional; Thickness: 2. 2 2. 3mm; Double sided solid Coating; Resistance to
