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Hello guys, so recently my dad picked up some steel at an old garage sale, and he got a very large coil spring and 2 long heavy drill bits, both of which are marked with the word Thor is fancy cursive. I have heard that both springs and drill bits are quality steel, but i was wondering if i could get help with some exact identification on the steel and info on how to heat treat it. Thanks! "for reference the the coil is about a half inch thick