... /25mm 2. different length and diameter 3. CO2 Laser lens Reflective mirror for laser machine Material:Optical GlassUse:Laser Machine spare ... partsSize: dia.20 / 25 mmcoating:high reflective dielectric coatingSpectral Data:R>99%@1064nmPart Nodiameterfocal lengthshapeCX20-120mm/25mm38 ... , PV, CV-CXCX20-820mm/25mm7.5''PX, PV, CV-CX Reflective mirror for laser machine