I'm pleased I purchased this despite some of the bad reviews. Okay, the instructions are deplorably insufficient, but installing this is pretty straightforward. People complained about the washers being the wrong size (oddly, they are referred to as \"shims\" in the instructions), but they're obviously using them at the wrong location (they're for the support arms). People also complained that the provided hardware was low quality and not right for every installation. Quality was fine for me and the bolts provided are more suitable for installation into a solid (like cement) wall, but I was installing on the side of my wooden shed, so just got some M6 or M8 bolts. The metal components are high-quality and well-made and I really like the foam and neoprene covering on the arms to protect my boats. I have two full-size sea kayaks and a full size Algonquin Prospector canoe on the rack, all of which fit without problem (the canoe is tight though). I'm really happy with it.