I got these bar ends as part of a bulk lot of vintage mountain bike stuff. They seem to be from the 90s and I believe came from a Trek mountain bike. They look very similar to a set of track system to bar ends that I used to have. Selling for cheaper because both clamps seem to be slightly warped and it takes a lot of work to get them onto a bar. The clamps need to be pried open while sliding on and it's a bit of a hassle. The bar ends are 7" long measured from the center of the clamp.

Feel free to message me with any additional questions.