Kooka AF Extension tube set for Canon (12mm,20mm,36mm)

Item information:

Condition: Brand new in original packaging 

Description:

Extension are exceptionally useful for macro photography, enabling you to convert almost any lens into a macro lens at a fraction of the cost while maintaining its original optical quality. This Autofocus Extension Tube Set (12/20/36mm) for Canon from KOOKA contains three tubes of different length, a 12 mm, 20 mm, and 36 mm, which can be used individually or in any combination to obtain the desired magnification.

Features:
Enables closer focusing for close-up/macro photography.
Alluminium contacts
Maintains autofocus ,auto-exposure, and full TTL metering with Canon DSLR's and EF/EF-S lenses
Set contains 3 tubes that vary in length.
Tubes can be combined for greater effect.
Metal construction.
Lens mount index