m42-m39 10-15 M42 to M39 / L39 Mount Adjustable Focusing Helicoid Adapter 10mm-15mm Extension Tube

Features:
and
Focus: manually
Front mount: M42 screw mount female (M42 x 1mm)
Length: 10mm to 15mm (5mm movement distance for focusing)
: 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
: 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!