The Topline Products C40435 Chrome Duplex Acorn Puzzle Style Wheel Locks are a decent set of wheel locks that come with four locks and one key. The chrome finish gives a sleek look to the locks and they feel sturdy when installed. However, the puzzle style of the locks makes them a bit difficult to install and remove, especially without the key. While they do provide some added security to your vehicle's wheels, the locks are not foolproof and determined thieves could still find a way to remove them. Additionally, if you lose the key or need to have a duplicate made, it can be a hassle to find a locksmith who can make a replacement. Overall, the Topline Products C40435 Chrome Duplex Acorn Puzzle Style Wheel Locks are an average choice for those looking to add some extra security to their vehicle's wheels. However, their limited functionality and potential inconvenience may make them less desirable to some consumers.