Well made and does the job well.
I purchased the 120mm length since my existing stem was 90mm and even though I ride a medium size roadbike for my 173cms height, I always felt that the front end of my bike was too twitchy, especially since I live in the world's # 1 city of potholes on Earth, sudden swerves to avoid a pothole in the monsoon was getting a bit dangerous. After a bit of youtube research, I decided on this length and have done a couple of 40km short rides on the bike with the new stem. I am glad I purchased it. It makes the ride more steady and I think it will make me a bit faster since it stretches out my body a bit more due to the additional length of this stem. My only concern before I bought this was if this would induce lower back pain but thankfully it did not and perhaps I should mention that I am a 58 year old rider and the first thing I have to rule out when changing any geometry component on the bike is lower back pain.