M52 M42(17 31) 17mm 31mm M52 to M42 Mount Camera Lens Adapter Ring Macro Extension Tube Helicoid Lens Focusing Adapter

Feature: 1. [Broad Compatibility] Suitable for M52 mount lens and M42 mount adapter ring, providing a focusing system for camera. 2. [Focus Length] Can be adjusted from 17mm to 31mm, support manual focusing, satisfying your various needs, flexible and convenient to use. 3. [Macro Extension Tube] Can be used as an old lens and macro extension tube, perfect for macro photography, digital camera photography, and more, easy to install and use. 4. [Premium Aluminum Alloy Construction] Made from high quality aluminum alloy with advanced anodic oxidation technique, sturdy and durable. 5. [Compact Size and Light Weight] Max. 7cm Diameter and weights only 99g, convenient for storage and carrying. Specification: Features: [Broad Compatibility] Suitable for M52 mount lens and M42 mount adapter ring, providing a focusing system for camera. [Focus Length] Can be adjusted from 17mm to 31mm, support manual focusing, satisfying your various needs, flexible and convenient to use. [Macro Extension Tube] Can be used as an old lens and macro extension tube, perfect for macro photography, digital camera photography, and more, easy to install and use. [Premium Aluminum Alloy Construction] Made from high quality aluminum alloy with advanced anodic oxidation technique, sturdy and durable. [Compact Size and Light Weight] Max. 7cm Diameter and weights only 99g, convenient for storage and carrying. Specifications: Model: M52 M42(17 31) Color: Black Material: Aluminum alloy Product Size: 6.5 * 6.5 * 2cm 2.7 * 2.7 * 0.86inch Product Weight: 64g 2.2oz Package Size: 7.6 * 7.6 * 3cm 2.9 * 2.9 * 1.1inch Package Weight: 69g 2.4oz Note: Only the camera lens adapter ring is included. Package List: 1 * Adapter Ring Package List: 1 * Adapter Ring