M12-UV-9mm: M12 Quartz Lens Assembly 9mm $855.00 each + – Add to cart The add to cart button will appear once you select the values above Contact us for more information M12 9mm Quartz Lens Assembly for XNiteUSB2S-MUV Increases UV sensitivity to 300-380nm. 16mm Diameter front lens element MgF2 Antireflection coated