Böhler-Uddeholm developed K390 MICROCLEAN® tool steel for the most demanding industrial applications. This Spyderco Endura 4 Lightweight proudly showcases this high-performance steel with a full-flat-ground blade housed in a distinctive blue FRN handle.
Check out the Spyderco Endura 4 Blue K390 Knife on our website
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Check out the entire Endura 4 line of knives on our website
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Thank you for your continued trust, confidence, and interest in Spyderco and our products. We are honored to serve you.
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