M42-M42 Thread Ring Adapter 36mm-90mm Macro Extension Tube Black Aluminium Alloy

Feature: 1. Using high quality aluminium alloy, after black anodizing, extend service life and have a better hand feel. 2. Smooth surface, easy to assemble, exquisite workmanship, focusing rotation is smooth and not stuck. 3. Inner wall paint spraying and extinction treatment, to avoid affecting imaging. 4. Spiral tube minimum length 36mm, maximum length 90mm. 5. Full manual operation, need to manually control aperture and manual focus. Specification: Conditon: 100percent Brand New Item Type: Focusing Tube Material: Aluminium Alloy Color: Black . Package List: 1 x Focusing Tube