Description:

The length of this helicoid tube is 25mm (min.) to 55mm (max.), offers a total of 30mm movement distance for the lens focusing.
This helicoid tube is useful for those lenses without focus ring, tube offers fine focus control for macro photography.
You can use M42 screw mount lenses, and even enlarger lenses.
This focusing helicoid tube is made with alloy, light-weight and durable.
Fitment: for Sony A9 A7R3 A7II A7 A6500 A6300 NEX and other E-mount M42 Lens&Camera.

Specification:

Material: Alloy
Front Interface: EF
Back Interface: E-MOUNT
Tripod Interface: 1/4 UNC
Helicoid Tube Length: 25-55 mm
Size(LxWxH): Approx.5.9x5.9x2.1 cm/2.32x2.32x0.83 inch

Package Includes:

1 Piece M42-M42 Focusing Helicoid Adapter 25-55mm

Note:

Automatic diaphragm, auto-focusing will not operate correctly while using this adapter. Manual focusing with A/M mode metering is ok with the adapter.