Adjustable Focusing Helicoid Adapter, M42 to M39 Focusing Helicoid Lens Mount Adapter Macro Tube Accessory (10mm-15mm) focusing helicoid
Features:
brand new and
Focus: manually.
Front mount: M42 screw mount female (M42 x 1mm).
Length: 10mm to 15mm (5mm movement distance for focusing).
Material: aluminium alloy.
Rear mount: M39 screw mount male (M39 x 1mm).

Specifications:
Front mount: M42 screw mount female (M42 x 1mm)
Rear mount: M39 screw mount male (M39 x 1mm)
Length: 10mm to 15mm (5mm movement distance for focusing)
Focus: manually
Material: aluminium alloy.

Package Includes:
1 x Focusing Helicoid

Note:
Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid.
Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!