Best deal for nut files in Canada?

How to make a 2 sets of Guitar Nut Files for $ guitar nut slot files These are hot garbage and I used them for at least half a dozen nuts when I first began working on guitars Stewmac Gauged Nut Slot Files guitar nut slot This guitar tool is for guitar tunning and guitar repair to adjust nut slot When tunning your guitar you might want to adjust your string action

guitar nut slot files 008 gauge string would you use a file etc, that kind of thing? Ultimately I want to get the nut slots spot on and I have guitars which I use sets of 8-38,