This is my new Kreg shelf pin jig. It arrived today and will be out to good use later this spring as I make some furniture for our home.
It is an ingenious device that easily allows the accurate drilling of holes for shelving; those little metal pins go into the holes and the shelves locate onto them. This is my third (fourth, if you count the two measuring tools I have) from the Kreg stable. All are very high quality and make their tasks simpler and quicker.