I liked how I can adjust them but they are really fragile.I found the mirrors somewhat difficult to mount on my bike. I must have thick fingers because when I would put the screws in, the mount would twist and then I'd lose the screw and have to find it again. The little wrench they send with the mirrors kept sliding off my fingers so I was dropping it too. I had to move one mirror on the handlebar to the other side of the gear shift so I could see behind me. It was also hard to adjust the mirrors to see behind me because they were so firm. At first, I thought I was going to break them but they are sturdy so you just have to bend and twist them to your liking. The mirror glass is adjustable so it was good. Once I got them on, they are great. I think you may just need thinner fingers or far more patience to get them on.The mirrors are very sturdy but unfortunately, there is no space on my particular bike to affix the brackets.I had some difficulty installing this mirror until I hit on the idea of using a pair of needle-nosed pliers to hold the nut while I tightened the screw.However, once installed, I was pleased. I was able to adjust the mirror to provide a clear view of the areas to my left and behind me. (I'm using only the one mirror.) So far, it appears the mirror will stay put, which is a problem I've had with other mirrors. There is a little bit of vibration when I ride, but not bad for a disk sitting out at the end of a foot-long flexible cable.Easy to see, easy to install, comes woth needed Allen wrench and an extra bolt. The bolts are small and easy to drop, install where you can find a dropped screw.Fit our Trek hybrid bikes fine. I appreciated that it came with allen wrenches, as I can't always find my set. The reason I am slightly disappointed is that, like car side mirrors, objects seem far away. Cars still seem to sneak up on me especially if they are not light colored. By the time I notice them they are maybe 3 or 4 car lengths away. So the mirror helps, but not as much as I expected.These mirrors work much better than others I have tried on my ebike. On an e bike the mirrors mount a little farther from the grips due to thumb throttle. These still clear your arm for a good view behind the rider. The adjustable arm is Very stiff but then does not move while on the bike. Good job.I've used this product regularly for 3 months and since I bought it based on reviews by others, I felt I should share my experience, too.On the positive side:1) It was easy to assemble.2) It is very light and easy to carry around.3) The detachable feature makes it very convenient to remove and use as a shopping basket in the stores.4) It is priced well; real value for money.On the negative side:1) It came without manual, which makes its attachment a bit tricky initially. One has to figure it out by themselves.2) Some of the bolts fall off very often no matter how hard they are tightened.Overall, a very useful product and a great value for money.Absolutely love this basket. The quick release is so handy, press the button and the basket slides up and away from the bike. When you want to put it back on it slides on easily and its quite safe. Its not small either, we packed a rolled up picnic blanket, box of sandwiches, a bottle of water, bike lock and a spare helmet in it. If you pack it too heavy it will sway you a bit when you take corners but its not too bad. It comes with a plastic handle bit that clips onto the metal handle to make it more comfortable to carry so be careful you don't throw it out with packaging. It came quite quickly too.I've waited about a year before reviewing this product because I wanted to be sure it stood up to some hard use.It appeared initially as not too sturdy but actually it is bulletproof and has survived use (and abuse) over three/four times a week long cycles. Attaching is pretty simple and whilst positioning is important to stop unnecessary rattling - once that is done it clips on and off easily and is excellent for shopping. Excellent value for money.Great basket, easily fitted, strong material, excellent design. My engineer husband was impressed with this basket. It is ideal as so easy, press of a button to remove - going into shops, etc. Also, with no carrier bags at shops any longer, it makes perfect sense to take this basket in a shop to bring out your purchases and straight onto your cycle. Well worth the money, quick delivery too!quick release feature makes it safe to use while cycling and easy to remove when shopping, holds a good amount and does not swing around when full which makes cycling with a load quite safe. Love that fact that I can use as a shopping basket and remove so easily. Good buy.