Viltrox Extension Tube for Canon EF mount. It has electronic contacts and is a full set of 12, 20, and 36mm tubes. I haven't used it much, so I think the condition is good. I usually keep the front and rear caps on, but they are not included as I use them for other purposes. The body only. The retail price is nearly 7000 yen, so I think it's a good deal. I may change the shipping method to Yu-Yu Mercari Delivery. Thank you for your understanding.