Look nice and good quality not to hurd to put on the e bike or a bicycle just make sure before buying this make sure you have a fil up screw driver because you will need it to put it on it pretty cool I would definitely buy again good for the money

Very basic design, too many nuts bolts , screwsto tighten up and position - Fiddly.Best designs have only 2 connection and ball joints at each end - have one now fantastic. Easy to adjust and very strurdy about 30% dearer.

Works on a cruiser, even though documentation said it wouldn't.

WOW! Much better than I expected! Made of metal that clamp tightly on my bike and swivel to almost any position you like. A larger than expected mirror in a more rectangular shape vs round(which I prefer) gives me the ability to get a really good viewing angle. You also get 2 pcs in this kit which increases the safety factor so you can see on either side. The mirror housing is made of plastic and has a cool subtle design on the back and the mirror is clean and sharp with no distortion for a really clear view. Overall a great product that will will for any age on almost any bicycle that will increase your safety on the road,street or trail.

Definitivamente me encantaron, ningún pero gracias

These mirrors are well designed and well constructed. Unfortunately, as noted by others, there is a problem: the locking nut for the ball joint stem is too thick, and the threads too short, for it to be used. Believe me, I even tried grinding down some material, with no success. Fortunately, the hole through the handlebar mount is threaded, so all you need to do is threadlock the ball joint mount as described by others, discard the too-big nut, and if you want a locking nut as well find a super-thin one to fit (that one should also be thread locked). The mirrors work great for me mounted under the bars, with a great view of the entire width of the road behind me, and little distortion. In fact, I'm only using the left one. It looks like they are actually reversible if you take them completely apart, so I also have a spare. Hopefully future production runs will have a long enough ball joint/bolt.

I bought these mirrors in spite of some of the negative feedback I read in other reviews. The #1 complaint that I read was that the threads weren't long enough for the nut. I overcame this pretty easily by screwing down the mirror tight on the round knob and using the mirror itself to crank the male screw tighter into the female mount. This gave me plenty of threads to tighten the nut.I originally hoped that I could mount these on top of my bars, but the position there really only gave me a good view of my arm and not much of the road behind me. So I swapped the right and left and hung them upside down below the bars. This works really well. This gives me a great view of the road behind me when I look down at the mirrors just beneath my grips. The only downside to this is that my knees will hit the mirrors in tight turns.I decided that I really only want a mirror on the left side (the traffic side), So I left the right mirror off. This means that I only have to watch out for my knee if I'm turning sharply to the left. This turned out to be pretty workable.I've been using these mirrors for a few days now and I found that it was best to leave the mount on the bars tight, but not crazy tight (just a little loose). This gives me a good up/down adjustment and prevents the mirror from getting knocked badly out of adjustment if I knock it out of place.I like the looks of these mirrors on my bike and I love the functionality of the large surface. Mounting it beneath the bar extends the optics angle to the point that a smaller mirror wouldn't give a very good view. But this large mirror gives a great view. I have it turned mostly horizontally, which gives me a great view of two lanes of traffic.

While they look nice, initial impressions are just "OK". I will update this review one I get some ride time to see how they hold up. These are going on a 2stroke motorized beach cruiser so it will be a lot more demanding than a normal peddle only bicycle.Pros:- Good Looking- Tons of adjustability- Inexpensive for 2x mirrorsCons:- Stem mounting bolt is way too short to install as pictured, along with the nut being too thick. Only ~2(!) threads actually thread on the bolt if installed as pictures show. I can promise they won't last if installed like that. Instead, I am installing them threaded into the mount with the bolt ABOVE the bracket to use as a set bolt and using loctite in the threads. Tighten nut to top of thread leaving ~1mm gap for adjustments, screw onto mount, then tighten nut down onto mount. One review has pictures of this mounting method, although they did not say if they are using any thread locker(which I highly recommend, you will see why). As a benefit, this method gives more clearance to adjust the vertical tilt of the arm since the diamond shape is not flat against the base.- Handlebar bracket seems very thin and small. Because it is thin it will likely rotate on the bar often since there is not much surface contact. Since they are small, on a standard handlebar not much of the bolts will fit through to the other side, leaving me questioning the robustness of the installation. Again, lots of loctite going on here since I am worried about them backing off. Ideally I would get longer bolts as well. On a handlebar with tubing any wider than standard, they will not work at all without using longer bolts.- Threads are poorly sized - seems like they were machined with wide tolerances typical of Chinese products. IE, if you thread the stem into the mount without the bolt, just thread to thread, you can shake it back and forth and feel the gap between the mount threads and the stem bolt threads. Loctite will be essential to prevent it from vibrating out, and I can see the ball socket bolts backing out too over time causing the mirrors to flop around on their adjustment so loctite those too(notice a trend here?).Notes:Many of the poor reviews are people complaining about rearward visibility. While I do agree some curvature would be nice, it is important to note that these are SIDE MIRRORS. Just like on a motorcycle, there is no such thing as a rearview mirror since you would need a mirror directly in front and over your head like a car. I own a ZX14R, ZX6, and a 1970s KZ650 and have used many different bike mirrors and no matter what curvature or style, you will never see directly behind you on a bike.In summary: Chinese parts like this need Loctite. Everywhere. BLUE if you want to be able to remove or adjust in the future(I used blue on the handlebar clamp and the two ball socket bolts), RED if you want the mount to be permanant(I used red on the stem bolt since I don't mind if the arm and mount come off as one piece). Refer to picture.