This is a set of three Kenko macro extension tubes (extension rings). The older models are not compatible with EF-S lenses, but this product is. It's a beautiful item with little use. Operation has been confirmed. Immediate purchase is OK, no price negotiation. Rings that allow you to get even closer to the subject than the lens's minimum focusing distance. By attaching the macro extension ring between the camera body and the lens, you can get even closer to the subject than the lens's minimum focusing distance, allowing for macro photography. This set includes three rings: 12mm, 20mm, and 36mm. You can take pictures at 7 different magnifications by using them individually or in combination. It allows you to take macro shots without having to prepare a macro lens separately. ● Focus will not be achieved at a distance. ● When attaching, use a combination where the total length of the rings is shorter than the focal length of the lens. ● Compatible with all Canon digital SLR EOS models ● Compatible with both EF and EF-S lenses ● Although AF (autofocus) works, the depth of field is extremely shallow in macro photography, and the camera's AF may not work accurately, so please use manual focus. ● With lenses other than genuine lenses and Tokina lenses, the control signals, etc., are not compatible, which may cause a malfunction. Do not use them. Also, do not use them in conjunction with conversion adapters, etc.