anyone has tried the Aputure Macro Tube Set

[jimy444]

i am into macro photography but i wouldnt mind trying it...
i came across the following product:
http://www.aputure.com/en/product/macro_tube_set_en.php

did anyone try it please, any reviews also?

these are its main features:
1. Perfect for macro shooting
2. Supports accurate TTL & Autofocus
3. Compatible with all EF and EF-S Canon lenses
4. Strong, sturdy, durable