I received this product as a free sample to review for 3M recently.  I have hung up one picture using one of the hooks I received so far and am very impressed with how simple it was.  No nails, so smashed thumbs!!!  Sweet and simple!!!  The kit should have come with two wire hooks and two saw hooks, but I only received the two wire hooks, the saw hooks were missing.  There are several tabs to use with the hooks, and it is all nice and organized in a clear box that makes it handy to store what you have left.