Has anyone tried these? I'm planning to buy a 12" HR from McMaster, and the black oxide coating caught my eye with this description:
"When durability is a necessity, black-oxide coating is the answer—these files resist clogging and rusting, and keep the sharp edge on their teeth better than standard files."
I'm intrigued, but the fact that a 12" HR with black oxide coating costs LESS than a regular one makes me suspicious about the quality.
Anyone with experience on this type of hand file?
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