You're looking at a Mamiya RB67 #1 45MM Auto Extension Tube.

 

This tube is in excellent condition and works perfectly.  Comes with both front and rear caps.

 

WE SHIP IN 1 BUSINESS DAY as well we package professionally and will combine to save on shipping costs. We are also interested in BUYING your photographic equipment as well. Contact us through Ebay Messaging. We are Camera Exchange in Waterford Michigan.

 

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