VILTROX Extension Tube for EF EF-S 36mm, 20mm, 12mm, each 1 piece I bought these but I'm selling them because I don't have a chance to use them. The product condition is that there are no noticeable scratches. Please note that I have opened and used them a few times. Regarding the 12mm tube, since the time of purchase, it seems there is a compatibility issue with some lenses, and it sometimes wouldn't lock properly. Other than that, there were no problems. The mount side caps and instruction manual that came with the purchase are included. Regarding the product box, there is a dent from removing a sticker. If you don't need the box, please comment before purchasing.