I just bought this kickstand a couple days ago. Installation was amazingly simple and easy, and it seems to be a well-made product. And you can't beat the price!! I always feel a little better about buying products made in the USA too.
The salesman I talked to at REI said I would have to cut it down to the right size (with a hacksaw), but it actually fit my bike perfectly. I could foresee it being somewhat of a pain to cut it down to size for those who have to do so, although the salesman said it was pretty easy.
My only complaint so far is that I can foresee the kickstand eventually coming loose from the frame, and needing to be tightened. There is no nut or washer to help keep it screwed tight. I'll write another review if that becomes a problem later. Either way, it's not like tightening the screw every once in a while is a huge issue. It's still a good product.
I have one of each of my family members' bicycles. The one on my Mountain Bike has not come loose at the bolt, so don't worry about the lack of a lock washer. Add one if you wish. They are easy to cut if you need to adjust the length of the stand. The stands have worked great. I am ordering a new stand today to replace the one on my son's Mt. Bike. His bike got knocked over on to it's side and it landed on the stand and broke it at the pivot. My son has been a bit rough with his bike, so I guess this is to be expected. The stands are cast aluminum. Which is why the stand broke on my son's bike. Otherwise this is a great stand. Highly recommend. It beats those Chinese made adjustable kickstands sold in the discount stores for a higher price.
I bought this for my wife's new hybrid and it was the easiest modification that we did to it. The bolt takes a standard bike allen wrench and went on in less than 2 minutes! It bolts from underneath and does not interfere with the derailleur. We did not need to cut the length to fit on a 19" bike. The action of the kickstand is crisp and easy to operate and feels solid. Light and well made in my opinion.