Combining the functional, performance-based design of classic Spyderco knives with the patented Emerson blade-opening feature, the Endura 4 plain-edge folding knife is ideal for a host of applications. The Emerson opener is ...

Buy Now From Amazon

Product Review

Combining the functional, performance-based design of classic Spyderco knives with the patented Emerson blade-opening feature, the Endura 4 plain-edge folding knife is ideal for a host of applications. The Emerson opener is the Endura's most distinctive feature, with a hook that curves out of the top of the knife blade. Each time you remove the Endura 4 from a front pocket, the hook will catch the pocket's edge, quickly opening the knife blade so it's ready to use. The Emerson opener makes this a terrific knife for fishing, hunting, and other sports where one-handed use is crucial. You can also take the knife out of your pocket without engaging the Emerson hook by pulling it straight up and out, with your fingers placed on top of the closed blade.

Functionally, the Endura 4's VG-10 steel blade is flat saber-ground with a strong tip and a large 13mm opening hole. Users will also love the gray fiberglass reinforced nylon handle, which is molded with Bi-Directional Texturing for traction and improved ergonomics. And inside the handle are dual skeletonized stainless-steel liners, which strengthen the knife without adding additional weight. This also creates an anchor for attaching external and internal components. Other features include screw construction for easy cleaning and adjustment; slip-resistant jimping on the blade's spine; and phosphor bronze washers that smooth out the open/close action.

Specifications:

  • Blade material: VG-10 steel
  • Handle material: Fiberglass reinforced nylon
  • Blade length: 3-13/16 inches
  • Hole diameter: 1/2 inch
  • Blade thickness: 1/8 inches
  • Closed length: 5 inches
  • Overall length: 8-13/16 inches
  • Weight: 3.6 ounces



  • Trusted EDC Design - The Endura is one of Spyderco’s most proven folding knives, delivering decades of reliability with a design that balances strength, precision, and everyday versatility.
  • Customizable Carry Options - A four-position pocket clip and high-strength back lock provide secure, flexible carry for right- or left-handed users, ensuring confidence in any situation.
  • Lightweight Yet Rugged - Injection-molded fiberglass-reinforced nylon handle with skeletonized stainless steel liners delivers durability and comfort without adding bulk.
  • High-Performance VG-10 Steel - The saber-ground VG-10 stainless steel blade offers excellent edge retention and corrosion resistance, available in plain or fully serrated formats.
  • Everyday Cutting Confidence - From outdoor adventures to daily utility, the Endura combines lightweight construction, secure ergonomics, and professional cutting power in one dependable tool.

Similar Products

Spyderco Delica4 C11PGYW KnifeSpyderco Delica 4 Lightweight Folding Knife - Gray FRN Handle with PlainEdge, Saber Grind, VG-10 Steel Blade and Back Lock - C11PGYWSpyderco Delica 4 Wave.Spyderco Matriarch 2 Lightweight Folding Knife with Emerson Opener - Black FRN Handle with SpyderEdge, Hollow Grind, VG-10 Steel Blade - C12SBK2WSpyderco Tri-Angle Premium Sharpmaker Set with DVD and Two Sets of Alumina Ceramic Stones - 204MFLarge CQC 4KXL Pocketknife from Kershaw-Emerson (6055) Delivers Durability and Classic Strength with Instant Open, Frame Lock, Reversible Pocket Clip and Precision Technology; 6.1 ozSpyderco Dragonfly 2 Emerson Opener Folding Knife - Gray FRN Handle with PlainEdge, Saber Grind, VG-10 Steel Blade and Back Lock - C28PGYW2Kershaw Emerson's E-Train Pocket Knife (6034TRAINER) Specially Designed Unsharpened 3.2" Blade and Patented Wave Shape Opening Feature Helps New Users Develop Skill, Precision and Tactical ConfidenceSpyderco Endura 4 Folding Knife - Purple FRN Handle with PlainEdge, Full-Flat Grind, VG-10 Steel Blade and Back Lock - C10FPPRSpyderco SpyderPac - Deep Pockets with Heavy Duty Polyester Design and Clear Plastic Window (Large)