Triple Glazing Focusing Lens Collimating Coated Glass Lens Blue Laser Diode 405nm-450nm Specification: Material: GlassMetal Color: Black Metal Frame: Screw Size M9 P0.5 Lens Size: 0.7cm Thread type: full thread Focus length :8mm Features: 1.Make of glass and metal materialsSolid and durable. 2.Before carrying on some laser DIY activities please read about the technical informationfirst and protect your eyes before laser ray. Package Included: 1*Coated Glass Lens More Details:
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