This was convenient for carrying two spare lenses. I am selling it because I am upgrading my camera. It is for Canon EF mount. Only the main body and strap, no box. Below is the description: ------------------------------------------------------ Commlite Lens Holder CM‑LF‑C - Compatible Mount: Compatible with Canon EF (EF and EF-S) mount lenses. - Features: The "double lens changer" system has two lens mount parts, one on top and one on the bottom, allowing you to change lenses while they are still attached to your bag, without having to place them on a table or the ground. - Material/Construction: The main body is made of aluminum alloy and has a solid feel. There is a hole for a strap, and it is designed to be carried on your body with the included shoulder strap. - Convenient Usage Style: When shooting, you can hang the lenses on your waist or shoulder, allowing you to quickly change lenses while standing. The included strap makes it comfortable to carry. It is in like-new condition.