M42 to M42 Adjustable Focusing Helicoid Lens Adapter Macro Tube Accessory (17 31mm)

Features: This focusing helicoid tube is made of good aluminium alloy, sturdy and durable, equipped with standard M42 mount. The length of this helicoid tube is adjustable, it offers a distance for lens focusing adjustment, easy to use. This helicoid tube is useful for those lenses without focus ring. It can be used as macro barrel and offers fine focus control for macro photography. It will be better when you use it with filter adapter together. Specification: Condition: 100percent Brand New Material: Aluminium Alloy Color: as picture shown Adjusting Length: 17 31mm Size: Approx. 5.7*5.7*2.3cm 2.2*2.2*0.9inch Package List: 1 x Focusing Helicoid Adapter