ITEM NAME:M42 to M42 Brass 12-17mm Adjustable Focusing Helicoid Adapter Macro M42-M42 Description: This focusing helicoid tube is made of good metal, sturdy and durable, equipped with standard M42 mount. The length of this helicoid tube is adjustable, it offers a distance 12-17mm for lens focusing adjustment, easy to use. 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. It will be better when you use it with filter adapter together. Specification: Material: Aluminium Alloy Color: Black Options(Adjusting Length): 12-17mm Size/Diameter: Approx. 5.8cm / 2.28inch Package Includes: 1 x Focusing Helicoid Adapter.This helicoid tube is useful for those lenses without focus ring. 1 x Focusing Helicoid Adapter. It will be better when you use it with filter adapter together. Options(Adjusting Length): 12-17mm. Color: Black.
