M4 is a tool steel produced by Crucible Industries, a company known for the production of some of the best knife steels on the market today. M4’s incredible edge retention and overall hardness make it a steel of choice for cutting contests. You’ll often see CPM-M4 used in popular custom knives and in production models from big knife brands like Spyderco and Benchmade.

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Benchmade Osborne Contego Folding Knife 3.98" CPM-M4 Black Combo …
$250.00
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Spyderco Gayle Bradley 2 Folding Knife 3.6" CPM-M4 Plain Blade, C…
$245.00
$171.50
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Benchmade Freek Folding Knife 3.6" Black Cerakoted CPM-M4 Plain B…
$225.00
$191.25
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Benchmade Bailout AXIS Folding Knife 3.38" CPM-M4 Gray Cerakote T…
$250.00
$212.50
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