General Zod
TGT Addict
So Harbor Freight???
I'd have probably wound up with better files.
I got the triangular file out of the package of "hardened steel" files and discovered it had a nasty burr on the tang where it had been cut to length. I took an older file and easily filed the burr off as if it was mild steel.
Which I suspect these crappy Chinesium files probably are.