※Please be sure to read the profile before purchasing. No-comment purchases and immediate purchases are welcome.※ ※We cannot ship on the same day, the next day, weekends, or holidays. Please refrain from purchasing if you are in a hurry.※ ※This item is not subject to price reduction.※ This is a tripod mount for Canon EF 100mm f/2.8L Macro lenses, made by the American equipment accessory brand DSLRKIT. It's the type that clamps around the lens itself to secure it. I bought this tripod mount on Amazon about 3 years ago for around 4000 yen, anticipating the purchase of the lens, but ended up buying a different lens and never used it. It's made of metal and is fairly sturdy. The inner diameter is approximately 68mm. Please refer to the photos. I think it will probably work, but I haven't actually tested it on a lens, so I'm selling it as junk. It could also be used for modifications, etc. Free shipping via Yu-Packet Plus. *We will basically ship within 2-3 days, but we do not ship during Golden Week or on weekends and holidays, so please be aware of this.*