The Enuff 2 FB31SBL2K390 is Spyderco’s compact fixed blade, longer and leaner than the first-generation Enuff. This version pairs a fully serrated K390 MICROCLEAN SpyderEdge blade with blue FRN scales, the signature color of Spyderco’s K390 family, and includes a polymer sheath.
K390 MICROCLEAN is a powder metallurgy tool steel from Böhler-Uddeholm, developed to withstand demanding industrial applications. Spyderco says it offers exceptional sharpness, edge retention, and toughness in knife blades. The thin 0.118″ blade is full-flat ground, and the fully serrated SpyderEdge grips and cuts rope, webbing, and heavy cord where a plain edge tends to slide. The trade-off is care: it isn’t stainless, so it needs to be kept clean and dry.
- Blade: 3.95″ K390 MICROCLEAN drop point with a 3.72″ fully serrated SpyderEdge, full-flat grind, satin finish, 0.118″ thick.
- Handle: Blue FRN scales with Spyderco’s Bi-Directional Texture over a skeletonized full tang, with a large lanyard hole; 7.98″ overall, 3.3 oz (knife only).
- Sheath: Black injection-molded polymer sheath with snap-fit retention, a secondary leather retaining strap, and a G-Clip mount.
- Carry: The G-Clip configures for belt or inside-the-waistband carry.
Ideal for: boaters, rescue workers, and outdoor users who need a compact serrated fixed blade for rope and webbing; steel enthusiasts collecting Spyderco’s K390 family; and anyone who wants a light, easy-to-carry sheath knife.
Care note: K390 MICROCLEAN is a tool steel, not a stainless steel. It may patina or rust, so wipe it clean and dry after use and keep a light coat of oil on the blade.
Spyderco Enuff 2 K390: Frequently Asked Questions
Answers to the most common questions about the Spyderco Enuff 2 (FB31SBL2K390).
What type of blade and sheath does the Spyderco Enuff 2 FB31SBL2K390 have?
The Enuff 2 is a compact fixed blade with a 3.95-inch K390 MICROCLEAN drop point blade, fully serrated with Spyderco’s SpyderEdge, on a skeletonized full tang. It comes with a black injection-molded polymer sheath that uses snap-fit retention plus a secondary leather retaining strap, and a G-Clip mount for belt or inside-the-waistband carry.
What is a SpyderEdge serrated blade good for, and how do I sharpen it?
Spyderco’s SpyderEdge is a fully serrated edge pattern. The serrations grip fibrous materials, so the blade cuts rope, webbing, seatbelt material, and heavy cord where a plain edge tends to slip. To sharpen it, use the corner of a triangle or tapered rod to touch up each serration from the beveled side, then lightly remove the burr on the flat side. Spyderco also offers factory sharpening service.
What is K390 MICROCLEAN steel?
K390 MICROCLEAN is a powder metallurgy tool steel from Böhler-Uddeholm, developed to withstand demanding industrial applications. Spyderco says it offers exceptional sharpness, edge retention, and toughness in knife blades. Spyderco marks its K390 knives with a blue handle color.
How do I care for a K390 blade?
K390 MICROCLEAN is not a stainless steel, so it may develop a patina or rust if left wet or dirty. Wipe the blade clean and dry after use, especially after exposure to water or sweat, and keep a light coat of oil on it. Let the knife dry fully before returning it to the sheath.
What comes with the Enuff 2 FB31SBL2K390?
The FB31SBL2K390 ships with the knife and a black polymer sheath with a leather retaining strap and G-Clip mount. Packaging and included items are set by Spyderco and are subject to change.
Where is the Enuff 2 FB31SBL2K390 made, and what warranty covers it?
This Enuff 2 is made in Japan. Spyderco warrants that its genuine products are free from defects in material and workmanship for the life of the product. The warranty does not cover loss, theft, accidents, abuse, misuse, improper sharpening, normal wear and tear, or alterations, and broken, lost, or bent metal clips are typically not covered. Shipping to and from Spyderco is the owner’s responsibility. Contact Spyderco directly and include the Spyderco Warranty & Repair Form with any return.
K390 MICROCLEAN · SPYDEREDGE · FIXED BLADE
A Compact Serrated Fixed Blade in K390
A 3.3 oz fixed blade with a 3.95-inch fully serrated K390 blade and a polymer sheath with a G-Clip for belt or IWB carry.
Specifications
| Product Type | Fixed Blade |
|---|---|
| Brand | Spyderco |
| Product Name | Enuff 2 |
| Model # | FB31SBL2K390 |
| Overall Length | 7.98 in |
| Blade Length | 3.95 in |
| Blade Thickness | 0.118 in |
| Blade Material | Böhler K390 MICROCLEAN |
| Blade Style | Drop Point |
| Blade Edge | SpyderEdge |
| Blade Grind | Flat |
| Blade Finish | Satin |
| Handle Material | FRN |
| Handle Finish | Bi-Directional Texture |
| Sheath Material | Polymer |
| Sheath Color | Black |
| Weight (oz) | 3.3 oz |
| Origin | Japan |
| Blade Range | 3.5-3.99 |
| Edge Length | 3.72 in |
| Handle Color | Blue |
| Tang | Skeletonized Full Tang |
| Sheath | Black polymer, snap-fit with leather retaining strap and G-Clip |





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