The roof bars them self are light weight quite strong and easy to install. How ever when they arrived the locks are really stiff which at first I put that down to being new. But I put three locks on and got to the forth one when I noticed a piece of the metal of the roof bar where the latch of the lock turns into is broke off. To be fair though these are still better quality than the last ones I had just a shame the locks them self are cheap on the metal the locks twist into is so small that it snaps off. That being said it has good points and bad the good points is it might deter some one from no stealing them and in reality although you get four keys it wouldn’t take much to snap the lock if you lost your keys and needed to remove them