I was fortunate to find an RV 12 builder that had opted to stop building, and bought his tools at a very nice price. I got the Avery tool assortment for the RV 12, plus a new Sioux pneumatic rivet squeezer and air drill. Many of the tools I have a vague idea of what task they perform, but books came with them. Included in the kit of course were many, many clecos, pneumatic rivet puller, dimpling and fluting tools. Supposed to be everything you need to build an RV12. We will see.