This is a Rec-Mount cantilever mount. I had a GARMIN cycling computer attached to it. It's in good condition! Regarding the condition of the product and its usage, 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, such as 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 businessperson, but simply an amateur. I try to take care and inspect the items carefully, but there may be oversights, so please understand this beforehand. 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.