This drop is all kinds of mislabeled and confusing.
This is a drop for the Smoking Gun Pro version only.
The new Breville/Polyscience Smoking gun Pro.
Your options are Smoking Gun Pro alone which comes with one use each of Hickory and Applewood chips
And you can optionally pay $20 more to get the astronomically priced Polyscience Classic Smokehouse kit of woodchips (4oz jar of Hickory, Mesquite, Applewood and Cherrywood wood chips.)