what is the purpose of the transformer/inductor in this tone circuit

[ELS122]

I found this circuit while searching for 4P24T rotary switches on eBay.
and found this circuit that intrigued me cause it uses 2 coils of some sort and is meant for a strat, it's some kind of tone circuit, doesn't use any batteries (passive) and I have no clue what they use the transformer looking things for. maybe you have a better clue to what it's for:

[ELS122]

oh nevermind.. I found out that it's used for cutting mid frequencies!