This trailer hitch bolted up perfectly. i'm 78 years old and installed it by myself on my 2017 Lexus RX 350, without using a jack or lift of any kind. Simply laid down on my back, pulled the hitch up on my chest, lifted it into place and put the bolts in. It came with all the washers and bolts needed and I had it installed in less than 20 minutes. Great product!!!