Fotasy M42 42mm Thread lens to M42 Focusing Helicoid Adapter 25mm - 59mm

Fotasy M42 to M42 Adjustable Focusing Helicoid 25mm-59mm, 34mm MovementFeatures: This focusing Helicoid tube is made with light-weight alloy. This Helicoid tube is useful for those lenses without focus ring It could be used as Macro barrel, and offers fine focus control for macro photography. The length of this Helicoid tube 25mm (min) to 59mm (max), it offers a total of 34mm movement distance for lens focusing.Package Includes: M42 to M42 Adjustable Focusing Helicoid 25mm - 59mm x1