Of course, while the genius of these is that they are interchangeable, you will find in practice that you will not want to switch and unswitch all the time, especially when you are using several tools on the same job. I have 4 of these for 12 tool heads, and I would not want to have any fewer, at least the way I work - often with a couple of different rakes, a cultivator, a garden spade, and sometimes additional W-G tool heads. The handles are not that expensive, and having a few extra will save you valuable time.