Main Features: 

1)This macro extension tube with AF is suitable for all EOS cameras and can transform your Lens into a Macro Lens.The closer the focus is, the greater the magnification. The extension tube does not affect image quality as there is no optics inside. In comparison, a close up filters often blamed for degrading the quality of image. Auto-focus function cannot operate.

2)Material:aluminium  
3)Color:black  
4)1pcs/high qualified box