After assembly and set up this operates flawlessly and can really get out a lot of thatch, moss, etc. It's quite heavy duty and will no doubt last my lifetime as long as I don't abuse it. I have the lawn rake Brinly STS-427LXH 20 Cubic Feet Tow Behind Lawn Sweeper, 42-Inch and got 5 full loads of thatch out of a bit more than 1/2 acre of lawn. The lawn looks amazing, it's easy to use and has held up well.Assembly is much easier than the lawn sweeper ( see my review there ) but it isn't a walk in the park. The instructions are a bit better probably only because it's a much less complex product. A few assembly tips follow.My unit didn't come with carded and identified nuts and bolts, they were simply randomly dumped into to plastic bags. Go through the nuts and bolts and sort and identify them as some of them look close but are slightly different. Having a small 12 volt drill/driver and a nut driver set really helped putting this together. Wear safety glasses and gloves, the rake prongs will often be aimed right at your eyes during assembly and it's easy to bend over into them. As you get to each stage of assembly set your fasteners out in an easy to reach place as at times you'll be upside down and backwards. Don't lose any nuts or bolts...there are no extras!The assembly instructions have you putting the draw bar together piece by piece on the de-thatching unit... don't do that! Assemble the draw bar as a unit and then mount it, it's far far simpler and easier to get all the angles right. After assembly make sure all your bolts are properly tightened and seated as it's easy for one to slip out of register.It works really well, I added three regular sized red bricks to add a little weight and it runs right along digging out piles of dead grass. It's a bit of a bear to put together but nothing like the devil's spawn the leaf sweeper was. It's worth the money.