This is the basic set, which includes #10 and 1/4 drill guide bushings and a 3/8 dowel bushing. Keep in mind that these sizes are the listed sizes for the connector bolts and cross dowels, so not the same as drill bit sizes that you are supposed to use. I asked woodpeckers and they shared the info on which drill bits to use for each bushing, so I am sharing here in one of the pictures. Take a screenshot and save that.

I bought new and used only once, but I lost the original storage case, what is shown in the pictures is what you get. Very handy if you need to build furniture that disassembles.