Jon1270
Minister of Fire
Okay, the H30 (the top chain in the first pic is indeed narrow-kerf "pixel" chain, which does indeed use that sharpening guide.
The older chain, with the big honking safety bumpers, could be an H37, but I'm not personally familiar with it. Googling around a bit suggests H37 is a standard-gauge chain requiring a different kit.
In your position I'd buy a second H30 chain (or an Oregon 95VP, which is the same stuff) and retire the old chain, rather than getting a second filing kit.
The older chain, with the big honking safety bumpers, could be an H37, but I'm not personally familiar with it. Googling around a bit suggests H37 is a standard-gauge chain requiring a different kit.
In your position I'd buy a second H30 chain (or an Oregon 95VP, which is the same stuff) and retire the old chain, rather than getting a second filing kit.