Helicoid Adapter M42 to M42 Adjustable Focusing Helicoid Lens Adapter Macro Tube Accessory Macro Extension Tubes for Cameras Photography Accessories (17mm-31mm) - Fydun, Fydunm6hwbkq3a0-02

• [High-quality material] This focusing spiral tube is made of high-quality metal, sturdy and durable, equipped with a standard M42 mount [Scope of application] The spiral tube is for those lenses without focusing ring, with a wide range of applications and a perfect fit. [Our Commitment] Our goal is to provide high-quality products and pre-sales and after-sales services. If you have any questions about our focusing spiral tube, please feel free to contact us, we will reply you as soon as possible. [Fine Focus Control] can be used as a macro lens barrel to provide fine focus control for macro photography. [Conveniently adjustable]The length of the spiral tube is adjustable, and the focal length of the lens can be adjusted, which is convenient to use. (Recommendation: It will be better to use with filter adapter)