ROCKBROS Bike Rollers Adjustable Bike Trainer Stand Foldable Indoor Cycling Bicycle Roller with Resistance for MTB Road Bike Exercise

To short. For kids bike.

Assembly isn't an issue at all and it's the right size, don't see why other had that issue, but it came banged up. I would return it but it seems like a hassle given the size.

High quality manufacturing, but this product is nearly worthless to me. Both of my bikes are too long for it, too tall for it, and my wife's recumbent bike slips right off of it (I will manufacture a frame to stabilize the recumbent so it will not slip off). If this is the right product for you, it is a good one.

Easy setup but the rollers were all so tight it was impossible to ride out of the box. Loosen them up and set the distance for your bike and it's good to go. The description alluded to parabolic rollers but these seem as straight as an arrow.

Rollers don’t roll. No normal adult bike fits.I gave it one star because it was easy to set up.Returned the item.

I never purchased this item this item but Amazon wants me to do a Review on it.So, here it is, it looks nice but unless one has exceptional balance it is not for them.These things are very hard to stay upright on.

The drums or cylinders that the tires ride on were not perfectly round on the unit that I received. It vibrated enough to be highly annoying. I removed them to adjust the bearings (which they say to not do in the instructions) because they were definitely too tight. When they were loose enough to spin the drum while holding the drum axles, you could feel the vibrations from being out of round. 2 of the 3 drums on mine were not round. I still tried to make the best of it, and did an hour ride, but it was such a disappointment that I returned mine.

Adjusted rollers to furthest setting but it is too short for my adult Ten Speed bike.Seems to be good quality.I wish the description was more accurate or more detailed in the use of this.