Spyderco Endura 4 Plain Edge 3.8 in Blade Blue FRN

Spyderco has always taken great pride in their efforts to push the envelope of performance by offering exotic blade steels in their knives. With that spirit in mind, Spyderco is proud to offer the Spyderco Endura 4 Lightweight with a blade crafted from K390. Manufactured by Böhler-Uddeholm, K390 MICROCLEAN is a state-of-the-art cold work tool steel produced by the particle metallurgy process. Its advanced alloy mix was specifically developed to provide the extreme wear resistance and high compressive strength needed in industrial cutting, blanking, and punching operations. Despite its toughness, its exceptionally fine, homogeneous microstructure also makes it readily machinable and easy to heat treat. Collectively, these qualities make K390 an outstanding blade material for true steel connoisseurs.