This is the Crank Brothers multi-tool, the m19. I only kept it in my saddlebag during rides, and I've never actually used it as a tool. It has a chain cutter, which is convenient. The aluminum hard case looks great. It's the best for a portable tool! Regarding the condition of the product and its use, I ask for no claims and no returns. Self-introduction: I am a non-smoker and do not have any pets. I have a dust mite allergy, so I pay more attention to cleanliness in terms of cleaning and laundry than the average person. Thank you. ① This product is a used item. Please be aware of this. ② I am not a professional seller, but just an amateur. I try to take care of maintenance and inspection, but there may be oversights, so please understand. ③ To avoid trouble, I cannot accept returns or refunds. Regarding packaging materials, I would like to reuse and recycle them to help protect the global environment. Thank you for your understanding of the above three points.