Review on FOMTOR 31.8 Adjustable Stem 0-90 Degrees 90mm 110mm - Mountain Bike Stem for 31.8mm Handlebar - Suitable for MTB, Road Bike, BMX, and More by John Wood

It was easy to install and did exactly what I needed. My handlebars are now higher and a bit wider and my lean angle is better. I would give it 5 stars except one of the socket head screws on the platter wouldn't loosen to change the angle on the stems. Luckily the corner was ok. I even tried a jackhammer and a small impact wrench. It will not weaken. It wasn't critical as the angle was close to what I was working with. It appears to be a quality assembly, nothing dangles or dangles.