Features 1[OPTICAL GLASS MATERIAL] This wide angle objective lens uses optical glass, with high light transmittance, high refractive index, and brighter and clearer imaging. 2[2X MAGNIFICATION] The microscope's wide angle objective lens, with a magnification of 2X, helps to clearly observe the internal structure of small objects. 3[STANDARD INTERFACE] The outer diameter of the thread is 45mm, which is suitable for M48 interface, and can be used when installed on a microscope with M48 interface. 4[METAL OBJECTIVE LENS BODY] It is made of high quality aluminum alloy material, which is strong, wear resistant, corrosion resistant, fine workmanship, and long term use. 5[WIDE FIELD OF VIEW] The microscope objective lens has a wide field of view, more comfortable to watch. The lens will not be corroded or blurred, which is a practical microscope accessory. Specification Item Type: Objective Lens Material: Aluminum Alloy + Optical Glass Model: WD30 Purpose: Special Objective Lens for Microscope Lens Diameter: Approx. 37mm / 1.5in Applicable Interface: M48 Thread Outer Diameter: Approx. 45mm / 1.8in Height: Approx. 22mm / 0.9in Working Distance: Approx. 30mm / 1.2in Magnification: 2X Package List 1 x Objective Lens