TEH-HIGH Diam 18mm Focal Lens for CO2 Laser Cutting,FL:1.5" 2" 2.5" 3" 4" 5" 7.5"(2"/50.8mm) (1.5"/38.1mm) (2"/50.8mm)
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<b>[Product Information]</b><br>
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<li>Mateial: Znse</li>
<li>Diameter: 18mm</li>
<li>Focal length: 1.5"/38.1mm, 2"/50.8mm, 2.5"/63.5mm, 3"/75mm, 4"/101.6mm, 5"/127mm, 7.5"/190.5mm</li>
<li>Thickness:approximate 2mm</li>
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