Bought this to replace an old style weed whip that I have had for 45+ years. The old one was built like a tank & was still cutting well but, the metal rod finally broke where the wood handle was riveted through it. It didn't have serrated edges (was flat) which was good because it was easy to sharpen. The edges on this model are NOT sharp - and they are difficult to sharpen due to the serrations. But, the #2 rating is because after the 3rd time in use, just cutting some thicker weeds, the metal rod actually bent sideways between the wood handle and the bottom turn. I was able to bend back but it bent a second time & is now much weaker at that point. If I could return it, I would. They just don't make 'em like they used to. I'm trying to think of a way I can modify it to inc. the old rod/cutter into the handle of this new one. I would recommend against buying this product.