Hola el. Artículo no trajo una correa para amarraloThe item arrived with 2 rails which are different in sizeAll Locks are missingIn order to send it back $250 needs to be paid for shippingVery upset and dissatisfiedBe awareFitted these to my Skoda Octavia mk3 along with a Thule Motion XT L roof box.The bars look great, feel strong, are very quiet and maintain a sporty look.The reason I have given 4 stars is for my security doubts, they are fixed in place with rubber straps around the original roof rails. I don't think it would take much to cut through this rubber with a sharp blade and there's the bars and everything else gone. I expected the key covers to mold around this to hide the rubber. The bars looks so good that I'm willing to take the risk.After realising just how much stuff the wife had packed for our 2 kids for a week in center parcs, I realised I needed a roofbox! So I looked around and found a second hand box, and came across these roofbars. Good thing too! They're great!!As far as roofbars go, these are the least obtrusive ones I could find, for several reasons:1. They don't protrude past the roof rails on my 2007 RS4 Avant2. They sit much closer to the roof than most roof bars3. As they're black, they match the black optics option on my car (black roof rails, window trim, and grill surround)Fitting seemed a little awkward at first glance of the instructions, but after watching an installation video on youtube it wasn't too bad afterall. Basically, at the end of each bar, you insert a plastic strap that wraps around the roof rails, and is then tightened with a supplied hex tool. A plastic cover then snaps over this, and a locking barrel can be inserted to secure the cover and prevent tampering/theft. Just don't do what I did (as pictured), which was to install the bars facing the wrong way! The bars have an aerofoil profile, so should be installed with the rounded edge as the leading one, with the tapered edge towards the rear of the car - as an aeroplane wing would be orientated. I somehow failed to notice this until after I'd put them on! I'll turn them around this weekend.The only downsides to these bars are the following:1. Expense. I think they're worth the premium over "normal" bars. They're very well made and designed, and look far better than any other bars. As a car-proud guy, I'm happy to pay a bit more for that2. The width. The bars are wider than most so I had to buy some 80mm wide brackets from halfords in order to attach the roofbox, as the supplied ones with the box didn't come close to fitting over the bars.A couple of pics of my car with the roof bars and box (a mont blanc vista) installed. As you can see from the pics, the box can sit quite close to the roof line due to these bars, and the bars are quite discreet die to their design and colour.I was in two minds about buying these as I'd read some good reviews and some bad ones .. well I bit the proverbial bullet and bought them anyway. I have to say, I'm impressed. They look superb on my vehicle and although a bit fiddly to fit, not really difficult.Like some others have commented, I was concerned that some £220 roof bars were only held on with rubber straps so I looked into it and found that they are in fact 'steel impregnated rubber' and the solid feel to them is evidence of this, they don't bend easily as all rubber would.All in all, if the space on your roof bars is not a major problem, I would certainly recommend these as I think they look much better than bars that overhang your rails. I have a medium roof box and it fits with some roof to spare but not a lot.These bars have been fitted for a few months now. They were slightly fiddly to fit, getting the rubber coated steel bands around the car roof rails, but on and looking good. As expected, fuel consumption is slightly higher with the bars fitted. One of the lock caps was damaged and while the company that supplied the bars would not respond to enquiries, Thule (direct) were very helpful and sent out the replacement part after confirming exactly where the damage was. They also identified that I would need a special key to remove the lock from the existing cover so sent that too.Purchased these as an Amazon Warehouse item, and they arrived within 3-4 days. Box was quite tatty but everything in the box was fine. First impression was that they were very well made. Instructions are very good.The bars are complete items so no need to match feet to bars as in other setups/options. The bars are sprung which means that they can be compressed to fit tightly inside the rails each side. There are then two plastic straps that wrap around the raill and attach to the bars. Once attached there is a special tool that tightens the straps onto the rails. The tool is really neat as the straps need to be torqued to 2nm and once this is done it clicks to tell you it's at the right torque. There are covers which then need to be fitted to finish the job off. What I also like about the bars is that all of the fittings to the rails are rubber or plastic so no risk of damage to the rails.These bars look really good on the car. Very happy with my purchase.