The Spyderco Endura 4 Lightweight C10PSBK is a proven, hard-use folding knife built for everyday carry, duty, and outdoor tasks. Featuring a 3.75" part-serrated VG-10 stainless steel drop-point blade and a black textured FRN (Fiberglass Reinforced Nylon) handle, this Endura 4 delivers cutting performance, grip security, and lightweight comfort in a slim, pocket-friendly package. The included reversible pocket clip and Spyderco’s iconic Round Hole™ make it fast to deploy, easy to carry, and ready for virtually any cutting job.
If you’re looking for a full-size EDC or work knife that balances slicing power, durability, and low weight, the Spyderco Endura 4 Lightweight C10PSBK (UPC: 716104000951) deserves a permanent spot in your rotation.
Premium 3.75" VG-10 Stainless Steel Blade
At the heart of the Endura 4 Lightweight is a 3.75" blade crafted from VG-10 stainless steel, a high-end Japanese steel known for its:
Excellent edge retention
Corrosion resistance
Ease of sharpening
This combination makes VG-10 ideal for a knife that will see daily carry, outdoor use, and utility work. Whether you’re cutting rope, cardboard, plastic, or food, the Endura 4’s blade steel is built to handle it.
Part Serrated Blade – The Best of Both Worlds
The C10PSBK model features a partially serrated edge (SpyderEdge), combining:
Plain edge section near the tip for precision slicing and push cuts
Aggressive serrations near the handle for tearing through fibrous materials like rope, webbing, zip-ties, and cord
This hybrid edge profile makes it ideal for first responders, tradespeople, and outdoor users who need one knife that can handle both fine cutting and heavy-duty sawing tasks.
Drop Point Blade with Full Flat Grind
The Endura 4’s blade has a drop-point profile, offering:
A strong, controllable tip
Great piercing ability without being overly fragile
A versatile shape suitable for EDC, food prep, and field chores
Paired with Spyderco’s full flat grind, the blade:
Slices exceptionally well
Reduces drag through material
Makes resharpening the edge easier and more consistent
The result is a high-performance cutting tool that excels in everyday life, at work, and on the trail.
Signature Spyderco Round Hole™ for One-Handed Opening
Like all classic Spydercos, the Endura 4 features the iconic Round Hole™ in the blade:
Enables smooth one-handed opening with either hand
Works well even with gloves or wet hands
Gives you immediate, reliable access to your blade when you need it
This simple, ambidextrous opening system has made Spyderco famous among knife users worldwide.
Lightweight Black Textured FRN Handle
The Endura 4 Lightweight lives up to its name thanks to its FRN (Fiberglass Reinforced Nylon) handle:
Durable and impact resistant
Extremely lightweight, making it comfortable for all-day pocket carry
Bi-directional texturing provides a secure, non-slip grip in wet, sweaty, or gloved conditions
The black handle gives it a sleek, low-profile look that fits equally well in tactical, professional, or casual environments.
Full Steel Liners & Back Lock for Strength
Inside the FRN handle, the Endura 4 uses:
Skeletonized stainless steel liners for extra strength without adding unnecessary weight
A dependable back lock mechanism that provides a secure, positive lockup
This construction gives you:
Rock-solid feel during heavy cutting
Reliable lock strength trusted by EDC users and professionals alike
Long-term durability with minimal maintenance
When you hear the back lock snap into place, you know the blade is ready to work.
Reversible Pocket Clip & True Ambidextrous Carry
The Spyderco Endura 4 Lightweight C10PSBK includes a four-position pocket clip, allowing:
This means you can customize the carry to your personal preference or duty setup. Combined with the Round Hole™ and back lock, the Endura 4 is truly ambidextrous, making it an excellent choice for left-handed users as well as right-handed carriers.
Slim Profile, Full-Size Performance
Despite its full-size blade, the Endura 4 remains slim and easy to carry:
The narrow profile helps it disappear in the pocket
The lightweight FRN and skeletonized liners keep it from feeling bulky
Ergonomic curves and jimping on the spine provide excellent control and comfort for extended cutting tasks
Whether you clip it inside a jeans pocket, work pants, or duty uniform, the Endura 4 delivers serious cutting capability without feeling heavy or cumbersome.
Ideal Uses for the Spyderco Endura 4 Lightweight C10PSBK
Thanks to its combination of materials, ergonomics, and edge style, this knife shines in:
Everyday Carry (EDC) – opening packages, cutting cord, general utility
Work/Trades – electricians, construction, warehouse, maintenance, and more
First Responders & Law Enforcement – quickly cutting seat belts, webbing, and clothing in emergencies
Outdoor & Camping – food prep, carving, camp chores, and light bushcraft
Preparedness & Self-Reliance – a reliable cutting tool in your pocket or emergency kit
If you want one knife that can do a bit of everything, the Endura 4 Lightweight part-serrated is an outstanding choice.
Spyderco Quality & VG-10 Performance
Spyderco’s reputation for fit, finish, and functionality is well earned:
Precision-ground VG-10 stainless steel blade
Reliable back lock mechanism
Thoughtfully designed ergonomics and jimping
Lightweight yet strong FRN handle with steel liners
You’re getting a knife built to work hard and last, from a company trusted by knife enthusiasts, professionals, and collectors around the world.
Key Specifications – Spyderco Endura 4 Lightweight C10PSBK
Brand: Spyderco
Model: Endura 4 Lightweight
SKU / Model Number: C10PSBK
UPC: 716104000951
Blade Length: 3.75" (approx.)
Blade Style: Drop point, part serrated (SpyderEdge) / plain combo edge
Blade Steel: VG-10 stainless steel
Blade Grind: Full flat grind
Handle Material: Black textured FRN (Fiberglass Reinforced Nylon) with bi-directional texturing
Locking Mechanism: Back lock
Opening Mechanism: Spyderco Round Hole™ (one-handed)
Carry Options: Four-position reversible pocket clip (tip-up/tip-down, left/right)
Use: Everyday carry, work, tactical, outdoor, general utility
SEO-Focused Summary
The Spyderco Endura 4 Lightweight 3.75" Folding Drop Point Part Serrated VG-10 SS Blade Black Textured FRN Handle with Pocket Clip C10PSBK 716104000951 is a full-size, lightweight folding knife featuring a 3.75" part-serrated VG-10 stainless steel drop-point blade, black bi-directional textured FRN handle, reliable back lock, Spyderco Round Hole™ one-handed opening, and a four-position reversible pocket clip. Designed for everyday carry, work, tactical, and outdoor use, this Spyderco Endura 4 delivers excellent edge retention, corrosion resistance, and cutting performance in a slim, easy-to-carry package, making it one of the most popular and trusted EDC knives in the Spyderco lineup.
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