These carriages are really solid and feel well made. My only thing is that this photo shows button head hex bolts and for some reason mine came with these big bulky hex head bolts. So they will function but definitely don't look near as clean. Now I will have to spend more money to replace all of these (which is 24 bolts) to make them look as clean as the ones in the picture. That's really the only reason I gave them 4 stars and not 5 so far. I will have to see how they perform.