Description 
<br />title
<br />Macro Ring,Metal Mount Auto Focus AF Macro Extension Tube/Ring,for Canon EOS EF-S Lens 100D 60D 70D 550D 600D 6D 7D T5i T4i
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<br />feature
<br />This is a quality Phootlex Auto Focus Extension Tube set which includes 3 tubes of differnet lenghts 13mm, 21mm, and 31 mm - which can be used individually or in any combination to obtain the desired magnification.  
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<br />These extension tubes are designed with all the circuitry and mechanical coupling to maintain auto focus and TTL auto exposure with Canon lenses, given there is enough light to activate the cameras AF system properly. 
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<br />Auto-Focus 
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<br />This extension tube 
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<br />13mm tube (Tube 1) 
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<br />21mm tube (Tube 2) 
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<br />31mm tube (Tube 3)
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<br />specification
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<br />Material:Metal
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<br />Color:Red
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<br />Compatible Brand: CANON
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<br />Package Include:
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<br />1 x New Extention Tube(Red)