Exotic steel. Classic design. Built to cut and built to last.

The Spyderco Endura 4 Lightweight K390 is a high-performance evolution of a legendary EDC platform. Featuring Böhler K390 MICROCLEAN tool steel, this blade delivers extreme wear resistance and high compressive strength, making it ideal for demanding cutting tasks.

The full-flat grind enhances slicing performance, while the satin finish adds a sleek touch. Its blue FRN handle is lightweight, textured for grip, and reinforced with skeletonized steel liners, and a back lock and four-position clip keep lockup secure and carry versatile. Precision-built in Japan. A Spyderco Round Hole keeps one-handed opening fast and ambidextrous, and the four-position clip covers every carry preference.

Product Dimensions

• Overall Length: 8.78" (223 mm)
• Closed Length: 4.98" (126 mm)
• Blade Length: 3.80" (97 mm)
• Cutting Edge: 3.44" (87 mm)
• Blade Thickness: 0.118" (3.0 mm)
• Weight: 3.3 oz (94 g)

Features

• Blade Steel: Böhler K390 MICROCLEAN — cold work tool steel with ultra-fine grain structure for elite toughness and wear resistance
• Blade Style: Drop point
• Blade Grind: Full-flat — slicing precision and reduced friction
• Blade Finish: Satin
• Blade Edge: Plain
• Handle Material: Blue FRN — lightweight, textured, and ergonomic
• Liner Material: Skeletonized stainless steel — adds strength without excess weight
• Locking Mechanism: Back Lock — reliable lockup with easy release
• Opening Method: Spyderco Round Hole — ambidextrous one-hand opening
• Pocket Clip: Four-position — tip-up/down, left/right carry versatility
• Country of Origin: Japan — precision-built in Seki City
• Designer: Spyderco Originals