I have bought and installed one. For a project where you want to use a modern stem but also want to keep an original threaded fork it's a great solution. My only gripe/warning is that when I installed this the aluminum quill bolt/top cap proved too soft and started rounding out before the lock wedge was fully secured in the steerer, so I had to improvise with some assorted parts to get the headset snug, then reinstall the original cap as a cosmetic topper. No problems at all after figuring that out though, and it does its job as a headset perfectly.