Spyderco Endura 4 Blue FRN K390 Plain knife (C10FPK390)
- Endura 4 FRN K390 experienced people when out of the home prefer knives that do not need sharpening in the field. For demanding users, Spyderco has introduced the Endury version with a K390 MICROCLEAN steel blade of modern Böhler powder tool steel
166,32 €
This product is intended for use only by adults with knowledge and experience in handling sharp cutting tools. Improper use of the knife can result in serious injuries. The blade is extremely sharp and can easily cut through skin and tissue; therefore, extra caution should always be exercised while cutting, and hands should be kept away from the cutting edge. To prevent the knife from slipping, it is recommended to cut on a stable, non-slip surface and avoid excessive force, which may cause uncontrolled blade movement.
Leaving the knife on the edge of a table, countertop, or in easily accessible places—especially where children are present—poses a significant safety risk. The knife should always be properly secured after use, ideally by placing it on a stable surface or storing it in designated knife blocks, protective sheaths, or magnetic strips. The knife should never be used for tasks it is not designed for, such as opening cans or prying objects, as this can damage the tool and lead to dangerous accidents.
A dull blade increases the risk of injury, as it requires more force and is more likely to slip from the material being cut. Therefore, it is essential to sharpen the knife regularly to maintain optimal sharpness. Additionally, proper cleaning and drying of the knife are necessary to prevent corrosion and bacterial growth. Periodic inspection of the handle and blade is recommended to check for cracks, chips, or looseness. If any damage is detected, the knife should be repaired or replaced immediately.
When using the knife, focus solely on the task at hand—avoid talking on the phone, watching television, or other distractions while cutting. Ensure proper lighting in the workspace for better visibility and control. Please note that some countries or regions have laws restricting the ownership and carrying of knives. Before purchasing or using this knife, verify that its use is legal in your location according to applicable regulations.
Following these safety guidelines will help ensure safe and effective knife use, minimizing the risk of accidents and extending the lifespan of the tool.
Endura 4 FRN K390, Plain experienced people being outdoors prefer knives that do not need sharpening in the field. For discerning users, Spyderco has introduced a version of the Endura with a K390 steel blade. The exquisite E.D.C. with injection-molded liners in the elite blue color reserved for knives with a K390 MICROCLEAN steel blade.
In 1990, Spyderco introduced two models of knives, the Endura and Delica, creating a demand for lightweight one-handed opening folders at an affordable price. These products have become bestsellers. Thanks to their small size and low weight, they are an excellent choice as everyday EDC knives.
K390 MICROCLEAN® - state-of-the-art powdered cold working tool steel. Hardened in the 62-66 HRC range. Advanced alloy composition with high vanadium, tungsten and cobalt content provides strength and excellent sharpness retention. Manufactured in the Austrian smelter Böhler-Uddeholm.
Blade - with Clip Point profile, Plain smooth blade brought out with Full Flat Grind reducing the weight of the knife, improving cutting properties. Round SpyderHole cutout for opening the blade with the thumb. Notched section of the back of the blade, ramp (jimping / crosshatching) positions the thumb, gives solid support and makes it easier to operate the folder. Back-Lock blade lock with an additional Boye Detent cutout, preventing accidental release of the lock when gripping the knife firmly.
Handle - linings in blue color, reserved for knives made of K390 steel. Non-slip Bi-Directional Texturing (Bi-Directional Texturing) and notched handle ridges (Spine Jimping) strengthen the grip even with wet hands. Made of FRN (Fiberglass Reinforced Nylon), a fiberglass-reinforced nylon plastic. Metal hourglass clip with 4-way (up/down, right/left) 4-way clip positions. In the back of the handle a hole (lanyard hole) for a cord.
Skeleton - two steel plates with cut-out holes, to which the facings are attached. This provides high strength and stiffness with low weight of the knife. Reinforced fully demountable structure connected by torx screws. Phosphor bronze washers make it easy to open and close the knife.
Technical data:
Product number: C10FPK390
Product name: Endura 4 Blue FRN, K390 Plain
Overall length: 223.0 mm / 8.78"
Blade length: 97.0 mm / 3.8"
Handle length: 126.0 mm / 4.98"
Blade thickness: 3.0 mm / 0.118"
Handle thickness: n.d.
Weight: 94.0 g / 3.3 oz
Blade material: K390 MICROCLEAN
Blade hardness: n.d.
Blade grind: Full Flat
Blade finish: Satin
Handle material: FRN
Handle finish color: Blue
Backspacer material: Stainless steel
Backspacer color: Silver
Clip: Left/Right, Tip-up/Tip-down
Clip material: Stainless steel
Pivot mechanism: Pads
Locking mechanism: Back Lock
Opening method: Manual, Spyder Hole
Additional accessories: n.d.
Designer: Sal Glesser
Brand: Spyderco
Manufacturer: Spyderco
Country of Origin: USA
Developed by Sharg® company direct importer
