The Endura® 4 originated as one of the first lightweight folding knives designed for clip carry and has grown to be one of Spyderco’s most beloved and iconic models.This elite version enhances the design with CPM® SPY27® blade steel.
Developed in close collaboration with Crucible® Industries and exclusive to Spyderco, CPM SPY27 refines the cobalt-enriched formula of VG-10 stainless steel, incorporating niobium, nitrogen, and increased levels of carbon, molybdenum, and vanadium. This results in an exceptional balance of edge retention, toughness, corrosion resistance, and ease of sharpening.
The knife features a satin-finished, full-flat-ground PlainEdge™ blade that maximises these properties, complemented by a lightweight, fibreglass-reinforced nylon (FRN) handle that is injection moulded in a striking cobalt blue—one of the signature colours of Spyderco’s elite SPY27 knife family.
The handle also houses a robust back lock mechanism and includes a four-position pocket clip, offering options for left or right-side, tip-up or tip-down carry.
Overall Length - 8.70" (221mm)
Blade Length - 3.80" (97mm)
Steel - CPM SPY27
Closed Length - 4.98" (126mm)
Edge Length - 3.44" (87mm)
Weight - 3.3oz (93g)
Blade Thickness - 0.118" (3.0mm)
Handle - FRN
Clip Position - Ambi
Tip Carry Position - 4 Position
Lock Type - Back Lock
Lock Grind Full-Flat
Sheath - N/A
Origin - Japan