Solid mirror, good visibility, and easy to install. Seller sends an instructional email within 30 minutes after the package arrived - impressive! My only qualm with all these bar end mirrors is it will take the brunt of bumps that the rubber handlebar grips normally would, so with my son and daughter outfitted with these, we'll see how long they last. :-)

The Hafny Bar End Mirror, Stainless Steel is a very good mirror. It provides very good breadth of view of the road behind and the image, while not quite as sharp as glass, provides very good detail for what is behind. Not sure why others have a problem with image detail. When a vehicle or other moving object is in the far distance, you can easily determine its presence. As it gets closer the quality and clarity of the image continues to improve and detail about the object is clearly notable. I have no problem determining whether a car is near the white line or me on paved roads. I just returned from 3 weeks on the Great Divide Mountain Bike Route down the continental divide. The Hafny mirror was mounted on the left end of my Jones H-bar and proved invaluable for seeing where other riders were as I was traveling with 2 others, as well as the occassional ATV. On rutted gravel roads or single / double track it held its position and provided good images of what was behind, including two large sheep protection dogs that chased me in the Great Basin in Wyoming. This is perhaps the best mirror I've been able to find, and I've tried quite a few, for image quality, durability and mounting stability. See photo below for quality of image. There was a smudge on the right side of the mirror when photo taken with smartphone. I can not wear a helmet mounted mirror because my vision and prescription will not accommodate one mounted that close to my eyes. I also found the helmet mounted mirrors that I've tried very distracting and in constant need of adjustment from being lightly bumped. I like this mirror so much that I mounted one on each of my son's MTB flat bars for the GDMBR ride. They found it very useful. While it provides a stable and highly adjustable mounting position, it will move without being damaged it you bump it against a wall or post, or anything else firm. You can also easily fold it out of the way if need be. Just readjust and it will remain stable for the roughest off road riding. At $15 it is a superior bike accessory, and now I see they have available the same mirror with blast resistant glass providing an even clearer image for $20. I will likely try it down the line as well. I give the Hafny stainless steel mirror 4 stars and it will go to 5 if the glass mirror further improves the image.

I like this mirror. Its small and sturdy with a compact design that ensures it's not going to stick out too far off the end of the bar. I like the fact that the reflecting surface is metal so I don't have to worry about breakage. I was a little concerned that being metal it would reflect poorly, but it's bright enough to see clearly. Since it's so compact, it does not bounce nearly as much as the previous mirror I had ... it bounced so much that the screw came out of the end cap and it fell off! This one is not going to do that! It was just a little tricky to insert the post into the handlebar but a little saliva lube took care of it.

The pros - easy to install, seems well made, helps a lot with visibility of cars in your "blind spot" over your shoulder when road riding (I only put one on my left side).
The con - really only one con, and that is that in exchange for the ruggedness of the steel mirror surface, you don't get a crisp image. Not a big deal, since all you're looking for is a big ol' car.
All in all, good buy and better than anything I saw in local bike shops (and I'm in Austin, TX - with a LOT of bike shops!).

I like this mirror.
The fact that it has a stainless steel mirror instead of glass or plastic appeals to me.
Easy to adjust and stays in place.
At first I did not think it was going to tighten into the end of the handle bar because the expanding lock looked to small, but it tightened up just fine.
Spherical joint tightens well in any position.