High-security U-lock for peace of mind. - Model: MT 3024 - Size (Outer): 180mm x 245mm - Size (Inner): 105mm x 203mm Thank you for viewing. This is a U-lock for motorcycles. Although it is new and unused, it has been on display in a store for many years, so there is some sun fading and package soiling. I tried to open it to check the operation, but I couldn't figure out how to open it, so it remains unopened. If you are interested in purchasing, please comment before buying, and I will cut the package with scissors to check it. Please note that in this case, the outer plastic will be damaged and cannot be sent. I am not familiar with motorcycles, so please understand that I may not be able to answer your questions.