Mirrycle Mountain Bike Mirror (Three-inch Round, 2-Pack)

easy to assemble, light weight, bought one for each bike.

These are the best bike mirrors ever made. They work because they're big and they're in your field of view. If you're a pretentious cyclist who wants tiny little symbolic safety devices (like itty bitty blinky lights) then these aren't for you, but if you want to actually see what's behind you this does the job better than any other handlebar light or those awful helmet mounted ones.Note: DO NOT USE THREAD LOCKER. The instructions warn you not to, and I did before I bothered to read them, and the mirror pieces indeed crack apart later. The nut inside the plastic body is brass and split, so it spreads, and the little bit of threadlocker will expand in there, spread the nut, crack the plastic, and ruin the body parts. I've re-made mine with t-nuts and carbon fiber reinforcement, but I'd rather have just been riding.

I have purchased several of these mirrors and will continue to reccomend them to others. No vibration, they are a good solid fit. You can get a replacement mirror if yours was to crack.

These mirrors work great. This is my second purchase of them. I had a set of mirrors already on my bike but after seeing these on my husband's bike I had to have a set of my own. The best part of this mirror is being able to turn them inward when storing and transporting the bikes. Several people have asked where I got them and I have forwarded them the link to this seller. Being able to adjust on the fly is nice too. These work great on our Rad ebikes. They are sturdy and have a nice field of veiw.

Easy to install. Durable and easy to adjust. Convex mirror easily eliminates constantly turning around to look for traffic. Installed on my Priority Continuum Onyx bike.

Simple and functional. Tried smaller mirror strait out from bar and helmet mounted, both poor. This one works and greatly improves safety when on city street.

Ordered two. One works great on the hollow handles bike. Wide side view and easily adjustable. One won’t work on the other bike because there is a block just inside the handle.

UPDATE: The day after I posted this review, I received the missing hardware from the company. That was nice, but it took almost two months to get this resolved.Let's start with the positive - once you get through the install, this is a great mirror. It's clear, in a good position for visibility, and it doesn't vibrate out of position even on rough roads. I liked it enough on another bike that I bought a four-pack to put one on each my family's bicycles. Once you get them installed, they're really nice.Now the bad - out of the four kits I purchased, one had incorrect hardware i.e. one of the Allen-head screws was not long enough. I contacted the company, they said they'd send me hardware - but sent nothing. One month goes by, I ping them, they apologized and said they'd send hardware - so far nothing. Right now, I have three working mirrors, a box of spare parts, and I'm not willing to roll the dice that ordering a fifth kit will result in correct hardware.Of the four kits I bought, the Allen-head sizes were different in two of the four kits. And for some reason they use a 3.5mm Allen-head on one of the screws - not a standard size in bike mechanic tool sets. I own a lot of bicycle tools, and have never owned (or needed) a 3.5mm Allen driver. Yes, they give you a 3.5mm tool... two of them are now labeled with a chunk of blue tape in the "Island of Misfit Tools" drawer of my tool cart. I know... Whine, whine, whine... I just hate to see what could be an awesome product fail for easily avoidable reasons.