Feature:1. Applicable Model: Lens mount adapter ring is suitable for M42 lens to for Z mount full series, such as for Z6, for Z7, for Z50 and other full frame camera.2. Manual Focusing: Full manual operation, manual focusing, support manual M focusing, can achieve manual exposure with the body, focusing infinitely.3. Fast Focusing Speed: Red dot mark, accurate alignment, more accurate focusing, better help you take clear photos, easy installation and disassembly.4. Precise Fit and Firm Connection: When installed on the adapter, the lens has no gaps or shakes, and does not need to be adjusted to fit your lens.5. Aluminum Alloy Material: The camera adapter ring is made of aluminum alloy, precise machined, chrome plated, anodized and durable.Specification:Item Type: Camera Lens Adapter RingMaterial: Aluminum AlloyColor: As Pictures ShownWeight: Approx. 124g or 4.4ozApplicable Lens: for M42 LensApplicable Cameras: for Z Mount Full Series, for Z6, for Z7, for Z50 and Other Full Frame Camera.Package List:1 x Adapter Ring 1 x Wrench