[17mm-31mm]

[36mm-90mm]

[12mm-17mm]

1. This central helicoid tube is made of good quality metal, sturdy and durable, equipped with a standard M42 mount.
2. The length of this helicoid tube is adjustable, providing distance for lens focus, and is easy to use
3. This helicoid tube helps with lenses without focus ring
4. Can be used as macro barrel, providing fine focus control for macro photography
5. Better if used with filter adapter

Specifications:
Features:
This concentrated helicoid tube is made of good quality metal, sturdy and durable, equipped with a standard M42 mount.
The length of this helicoid tube is adjustable, providing distance for lens focus, and is easy to use.
This helicoid tube is useful for lenses without focus ring.
It can be used as a macro mirror, providing subtle focus control during macro photography.
It will be better when used with filter adapter.
Specifications:
Material: Aluminum alloy
Color: Black.
Optional length adjustment: 12-17mm 17-31mm; 25-55mm; 36-90mm
Size/Diameter: Approx. 5.8cm/2.28"
Weight: approx. 57-102g
Package List:
1 x Focusing Helicoid Adapter