Spyderco Endela C243FSK390 – Mid-Size K390 Serrated EDC Pocket Knife
The Spyderco Endela C243FSK390 splits the difference between the brand's legendary Delica 4 and Endura 4 Lightweight models, delivering a mid-sized platform that many carriers find to be the ideal "in-between" size for daily carry. This version is supercharged with a blade crafted from K390 MICROCLEAN, a state-of-the-art cold work tool steel from Böhler-Uddeholm. Originally formulated for demanding industrial applications, K390 steel delivers exceptional edge retention that keeps working long after ordinary blades have dulled.
Its 3.41" full-flat-ground, satin-finished leaf-shaped blade is fully serrated in Spyderco's SpyderEdge pattern, making short work of rope, webbing, cardboard and other fibrous materials. The fully accessible Trademark Round Hole allows ambidextrous one-hand opening, while a sturdy back lock, nested skeletonized stainless steel liners, and fiberglass-reinforced-nylon (FRN) scales in the distinctive blue reserved for Spyderco's high-performance steels keep the package light at just 3.2 oz. A four-position pocket clip supports tip-up or tip-down carry on either side of the body.
Specifications
| Overall Length |
8.10" (206 mm) |
| Blade Length |
3.41" (87 mm) |
| Edge Length |
2.99" (76 mm) |
| Closed Length |
4.69" (119 mm) |
| Blade Thickness |
0.118" (3 mm) |
| Blade Steel |
K390 MICROCLEAN |
| Blade Finish |
Satin |
| Grind |
Full-Flat |
| Edge Type |
SpyderEdge (Fully Serrated) |
| Handle Material |
Blue FRN |
| Lock Type |
Back Lock |
| Clip Position |
Ambidextrous, 4-Position |
| Weight |
3.2 oz (91 g) |
| Country of Origin |
Japan |
Frequently Asked Questions
What is K390 steel and why does it matter?
K390 is a Böhler-Uddeholm cold work tool steel with a high vanadium and tungsten content, giving the Spyderco Endela C243FSK390 outstanding wear resistance and edge retention. Because K390 steel is not stainless, the Spyderco Endela C243FSK390 benefits from being wiped dry and lightly oiled after wet use.
How do I sharpen a fully serrated blade?
The SpyderEdge serrations on the Spyderco Endela C243FSK390 are sharpened from one side using a tapered round rod that matches the scallop size, working each scallop individually and then stropping the flat back side. A Spyderco Sharpmaker with the triangular rods is the most common tool used to maintain the Spyderco Endela C243FSK390.
How does the back lock work?
A spring-loaded rocker bar drops into a notch in the blade tang to hold the Spyderco Endela C243FSK390 open, and you press the exposed cutout in the spine to release it. This mid-spine back lock is fully ambidextrous, so the Spyderco Endela C243FSK390 works identically for right- and left-handed users.
What is the Trademark Round Hole for?
The round opening hole is Spyderco's signature one-hand deployment feature, and on the Spyderco Endela C243FSK390 it is fully accessible from either side. Placing a thumb in the hole and rolling the blade open lets you deploy the Spyderco Endela C243FSK390 quickly without a flipper tab or assist mechanism.
Is a serrated edge better than a plain edge?
Serrations excel at slicing rope, webbing, seatbelts and other fibrous materials, which is why the Spyderco Endela C243FSK390 is a favorite for rescue, marine and utility work. For push cuts and food prep a plain edge is easier, so the Spyderco Endela C243FSK390 is best suited to users who mostly slice.
Is this a good size for everyday carry?
At 4.69" closed and 3.2 oz, the Spyderco Endela C243FSK390 sits between the Delica and Endura and rides comfortably in a front pocket. Many buyers choose the Spyderco Endela C243FSK390 specifically because it offers more blade than a compact folder without the bulk of a full-size EDC pocket knife.
Can I carry this knife legally?
Knife laws vary widely by state, county and city, so check your local blade-length and carry regulations before carrying the Spyderco Endela C243FSK390. The Spyderco Endela C243FSK390 is a manually opened, non-automatic folding knife, which is the least restricted category in most U.S. jurisdictions.
Where can I buy the Spyderco Endela C243FSK390?
The Spyderco Endela C243FSK390 is available at Going Gear, an authorized Spyderco dealer. Buying the Spyderco Endela C243FSK390 from an authorized dealer guarantees a genuine, factory-fresh knife backed by the full Spyderco warranty.
