Features: 1. Made of high quality alloy material with matte black anodized surface, durable, wear-resistant, anti-corrosion and extend its service life. 2. Completely manual control, supports manual focus and manual exposure and aperture priority. 3. Finish coating treatment at the inner wall to avoid reflection to CMOS and affect the imaging. 4. Precise thread ensures firm and smooth connection between lens and camera body. 5. Support for OM mount lens to fit for Olympus M4/3 mount mirrorless camera body. Specification: Name: Adapter Ring Material: Alloy Color: Black Compatible Lens: for OM Mount Lens Compatible Camera: for Olympus M4/3 Mount Mirrorless Camera Size: Approx. 6x6x3 cm/ 2.36x2.36x1.18 inch Weight: Approx. 76 g Packing List: 1 x Lens Adapter Ring 1、Made of high quality alloy material with matte black anodized surface, durable, wear-resistant, anti-corrosion and extend its service life. 2、Completely manual control, supports manual focus and manual exposure and aperture priority. 3、Finish coating treatment at the inner wall to avoid reflection to CMOS and affect the imaging. 4、Precise thread ensures firm and smooth connection between lens and camera body. 5、Support for OM mount lens to fit for Olympus M4/3 mount mirrorless camera body.