Time Sport USA. I’ve got a brand new Time Monolink stem. It is amazing. 125 grams made of carbon fiber. Unfortunately, while hammering up a hill, one of the titanium bolts snapped right at the head. Wow, I’m lucky I didn’t crash.
In any case, the nice folks at Time Sports USA actually answered my mail. Told me that they were switching from titanium bolts to steel bolts and sent me another set. If you have this stem, beware!