OOKWE 405nm Violet/Blue Laser Diode 3 Layers Collimating Coated Glass Focusing Lens

Specification: Brand new Color: black Lens Material: glass Lens Size: approx. 7mm Thread type: full thread Focus length: approx. 8mm Metal Frame: Screw Size M9 * 0.5 This is triple glazing focus lens for all kinds of blue-violet / blue laser products Attention: Do not touch the surface of the lens directly with your hands do not let the lens surface in direct contact with a hard object so as not to scratch the surface using a process typically used plastic forceps. Before carrying on some laser DIY activities please read about the technical information first and protect your eyes before laser ray. Package included: 1 x coated glass lens