---
product_id: 660848146
title: "4009970-SSI Ark Personal Defense Knife w/2.50 inch Blade - multi, N/A"
brand: "spyderco"
price: "¥74773"
currency: JPY
in_stock: true
reviews_count: 5
category: "Spyderco"
url: https://www.desertcart.jp/products/660848146-4009970-ssi-ark-personal-defense-knife-w-2-50-inch
store_origin: JP
region: Japan
---

# Compact 4.98-inch total length, ultra-light 25.4g 2.5-inch razor-sharp H-1 steel blade Fiberglass-reinforced nylon handle with Bi-Directional Texturing 4009970-SSI Ark Personal Defense Knife w/2.50 inch Blade - multi, N/A

**Brand:** spyderco
**Price:** ¥74773
**Availability:** ✅ In Stock

## Summary

> 🔪 Carry Confidence, Cut Above the Rest

## Quick Answers

- **What is this?** 4009970-SSI Ark Personal Defense Knife w/2.50 inch Blade - multi, N/A by spyderco
- **How much does it cost?** ¥74773 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/660848146-4009970-ssi-ark-personal-defense-knife-w-2-50-inch)

## Best For

- spyderco enthusiasts

## Why This Product

- Trusted spyderco brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Grip That Won't Quit:** Fiberglass-reinforced nylon handle with patented Bi-Directional Texturing ensures a secure hold, even when wet.
- • **Razor-Sharp Precision:** H-1 steel blade offers exceptional edge retention and corrosion resistance—ready for any environment.
- • **Discreet & Lightweight:** At just 25.4 grams and under 5 inches total length, it’s the perfect no-print everyday carry companion.
- • **Always Ready, Always Secure:** Innovative neck sheath with integral retention tab for quick, safe access without choking risk.
- • **Engineered for Professionals:** Designed for soldiers and security personnel, built to perform in the harshest conditions—including wet and humid environments.

## Overview

The Spyderco ARK Personal Defense Knife features a 2.5-inch hollow-ground clip-point blade crafted from rust-proof H-1 steel, delivering razor-sharp precision and unmatched corrosion resistance. Its fiberglass-reinforced nylon handle with Bi-Directional Texturing guarantees superior grip control in all conditions. Compact and ultra-lightweight at just 25.4 grams and 4.98 inches overall, the ARK includes a secure neck sheath designed for rapid, safe deployment without choking hazards. Engineered for professionals, this knife is an essential everyday carry tool that blends cutting-edge materials with tactical design.

## Description

The heart of the ARK is its deeply curved clip-point blade ground from H-1 steel. The curved edge and deep hollow grind ensure exceptional edge geometry and pack as much edge length as possible into the compact blade. Spyderco decided to invest in the tooling to mold a fiberglass-reinforced nylon (FRN) handle directly onto the blade's tang. An FRN handle allowed the use of Spyderco's proven Bi-Directional Texturing pattern, which provides unparalleled grip control even when wet. To ensure convenient, universal carry with any style of clothing (including none at all) the logical choice was to equip the ARK with a neck sheath supports the weight of the knife and resists the force of a rapid drawstroke, but cannot be turned against the wearer as a choking weapon like the paracord lanyards found on many neck knives. Overall length measures 4.98" with blade length 2.50".

Review: I run outside early in the morning and often when its still dark. I was interested in the Ark because it is small, light, and rust-proof. However, I was hesitant to purchase it based on reviews commenting on the small handle, poor sheath, and short chain. I was pleasantly pleased upon receiving the Ark from desertcart. The sheath has supposedly been improved with an integral retention tab, and the one I received has this sheath. The knife clicks into place and is secured unless you push the tab with your index finger and draw the knife. The chain is a tad on the shorter side, but I do not have a small head and was able to get it over my head without unclasping. I am over six feet tall and it does sit up a little high on the chest, about four inches above the belly button. However, I have not found it difficult to reach the knife when it is necessary. The small handle is what concerned me the most because I have large hands. However, I have not had any issues holding the knife. The handle material is good and does not feel at all slippery. Also, with my index finger on the groove and thumb on the top of the knife, I can easily get a good grip on the knife. I love how lightweight the knife is and I can barely feel it while I am wearing it. It arrived razor sharp. I hope that the rust proof claim will prove to be true. If you're looking for a fixed-blade edc that doesn't break the bank, you can wear in any weather condition, that is lightweight with no print under your clothing, I would not hesitate to try the Ark.
Review: Das Spyderco ARK (Always Ready Knife) gehört eindeutig nicht zu den "Billigheimern", sondern ist in einer Preisklasse angesiedelt, die mich zunächst in Erstaunen versetzte. Soo viel Geld für ein soo kleines Messerchen? Gewiss, es gibt preiswertere Alternativen für ein Kneckknife, wie das beispielsweise das CRKT Folts Minimalist, das zudem noch in verschiedenen Klingenformen angeboten wird. Die besonderen Eigenschaften des für das ARK verwendeten H-1® Stahls, einer stickstoffbasierten Speziallegierung, die nahezu 100%tig korrosionsbeständig ist, läßt sich Spyderco eben entsprechend teuer bezahlen. Der rutschsichere glasfaserverstärkte Kunststoffgriff ist direkt auf den Erl aufgespritzt und liegt recht gut in der Hand. Durch die rasiermesserscharfe Clip Point-Klinge ist die Schneide des kleinen Messers bis zum technisch machbaren in Richtung des Messerrückens verlängert. Das Messer wurde von Spyderco ganz speziell für Soldaten und Sicherheitspersonal im Einsatz entwickelt und sollte auch in der Dusche getragen werden können, nachdem sich dort wohl sexuelle Übergriffe von Kameraden oder anderen Personen auf Soldaten gehäuft hatten. Wer sich für die Entwicklungsgeschichte dieses kleinen Messers mit seiner hohlgeschliffenen hochgezogenen Clip Point-Schneide interessiert und einigermaßen des Englischen mächtig ist, kann die interessante Story auf der Seite von"Knifecenter" (bitte bei Interesse googeln) im Angebot von Spyderco nachlesen. Das Messer wird dort in der Suchfunktion bei Spyderco nicht als ARK sondern fälschlich als AFK gelistet. Der Link, den ich meiner Beurteilung beigefügt hatte, wurde von desertcart unkenntlich gemacht. [...] Zum Kauf dieses Kneckknifes hat mich nicht zuletzt die Hintergrundgeschichte zum Messer motiviert, obwohl ich natürlich nicht vorhabe, mit dem Messer zu duschen, sondern es einfach als nettes ausgefallenes kleines superscharfes Messer in meine Sammlung aufnehme.

## Features

- Made of highest quality material
- Manufacturer: Spyderco
- Manufacturer Country: JP

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Age range | Adult |
| Blade edge | Hollow |
| Blade length | 2.56 Inches |
| Blade material | H-1 steel |
| Color | Multi-coloured |
| Size | 13 cm |
| Hand orientation | Ambidextrous |
| Style | 4009970-SSI |
| Item display length | 12.7 centimetres |
| Weight | 25.4 g |
| Shape | knife |
| Number of blades | 1 |
| Power source | Manual |
| Seasons | Year-round |
| Features | Non-Marking Sole |
| Sport | Hunting |
| Included components | Battery Pack |
| Batteries included? | No |
| Brand | Spyderco |
| Department | Unisex |
| Manufacturer | SSI |
| Item model number | FB35PBK |
| Product Dimensions | 12.65 x 3.18 x 0.25 cm; 27.22 g |
| ASIN | B00XYC4TVW |

## Product Details

- **Recommended uses for product:** Construction
- **Brand:** Spyderco
- **Model name:** FB35PBK
- **Special feature:** Non-Marking Sole
- **Age range (description):** Adult
- **Included components:** Battery Pack
- **Handle material:** Fiberglass Reinforced Nylon
- **Colour:** Multi-coloured
- **Blade material:** H-1 steel
- **Style:** 4009970-SSI

## Images

![4009970-SSI Ark Personal Defense Knife w/2.50 inch Blade - multi, N/A - Image 1](https://m.media-amazon.com/images/I/51yxkjBoenL.jpg)

## Questions & Answers

**Q: What size are the eyelets for the Chicago sqrews**
A: The eyelets are about 4.5 mm in diameter.

**Q: Does amazon sell clone knifes?**
A: Yes

**Q: Why is this knife so much cheaper than the exact knife on Spyderco´s website?**
A: I think most knives / items are cheaper at retailers

**Q: Does anyone know the size of the mounting holes on sheath are or could recomend some mounting screws to use for a belt clip for this?**
A: The holes appear to be 3/32,  They are 1 1/4 inch across top to bottom and 1 3/4 Across the sheath., the width of sheath at the sides is 1/4 (three sets of holes top to bottom)

I am not aware of a belt clip for them, you might check Spyderco in accessories or somewhere like knife center, or blade HQ.

I have worn my as a neck knife since I have had it, no issues with this style of carry.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by M***E on 2 December 2018*

I run outside early in the morning and often when its still dark. I was interested in the Ark because it is small, light, and rust-proof. However, I was hesitant to purchase it based on reviews commenting on the small handle, poor sheath, and short chain. I was pleasantly pleased upon receiving the Ark from Amazon. The sheath has supposedly been improved with an integral retention tab, and the one I received has this sheath. The knife clicks into place and is secured unless you push the tab with your index finger and draw the knife. The chain is a tad on the shorter side, but I do not have a small head and was able to get it over my head without unclasping. I am over six feet tall and it does sit up a little high on the chest, about four inches above the belly button. However, I have not found it difficult to reach the knife when it is necessary. The small handle is what concerned me the most because I have large hands. However, I have not had any issues holding the knife. The handle material is good and does not feel at all slippery. Also, with my index finger on the groove and thumb on the top of the knife, I can easily get a good grip on the knife. I love how lightweight the knife is and I can barely feel it while I am wearing it. It arrived razor sharp. I hope that the rust proof claim will prove to be true. If you're looking for a fixed-blade edc that doesn't break the bank, you can wear in any weather condition, that is lightweight with no print under your clothing, I would not hesitate to try the Ark.

### ⭐⭐⭐⭐⭐ Review
*by E***. on 25 September 2015*

Das Spyderco ARK (Always Ready Knife) gehört eindeutig nicht zu den "Billigheimern", sondern ist in einer Preisklasse angesiedelt, die mich zunächst in Erstaunen versetzte. Soo viel Geld für ein soo kleines Messerchen? Gewiss, es gibt preiswertere Alternativen für ein Kneckknife, wie das beispielsweise das CRKT Folts Minimalist, das zudem noch in verschiedenen Klingenformen angeboten wird. Die besonderen Eigenschaften des für das ARK verwendeten H-1® Stahls, einer stickstoffbasierten Speziallegierung, die nahezu 100%tig korrosionsbeständig ist, läßt sich Spyderco eben entsprechend teuer bezahlen. Der rutschsichere glasfaserverstärkte Kunststoffgriff ist direkt auf den Erl aufgespritzt und liegt recht gut in der Hand. Durch die rasiermesserscharfe Clip Point-Klinge ist die Schneide des kleinen Messers bis zum technisch machbaren in Richtung des Messerrückens verlängert. Das Messer wurde von Spyderco ganz speziell für Soldaten und Sicherheitspersonal im Einsatz entwickelt und sollte auch in der Dusche getragen werden können, nachdem sich dort wohl sexuelle Übergriffe von Kameraden oder anderen Personen auf Soldaten gehäuft hatten. Wer sich für die Entwicklungsgeschichte dieses kleinen Messers mit seiner hohlgeschliffenen hochgezogenen Clip Point-Schneide interessiert und einigermaßen des Englischen mächtig ist, kann die interessante Story auf der Seite von"Knifecenter" (bitte bei Interesse googeln) im Angebot von Spyderco nachlesen. Das Messer wird dort in der Suchfunktion bei Spyderco nicht als ARK sondern fälschlich als AFK gelistet. Der Link, den ich meiner Beurteilung beigefügt hatte, wurde von Amazon unkenntlich gemacht. [...] Zum Kauf dieses Kneckknifes hat mich nicht zuletzt die Hintergrundgeschichte zum Messer motiviert, obwohl ich natürlich nicht vorhabe, mit dem Messer zu duschen, sondern es einfach als nettes ausgefallenes kleines superscharfes Messer in meine Sammlung aufnehme.

### ⭐⭐⭐⭐ Review
*by N***M on 14 October 2022*

軽くかっこいいですがグリップに汚れがたまりやすいです。軽さを重視しているのかブレードびっくりするほど薄いです。

## Frequently Bought Together

- Spyderco Ark Salt Fixed Blade Knife with 2.56" H-1 Corrosion-Resistant Steel Blade and Premium Injection-Molded Polymer Sheath - PlainEdge - FB35PBK
- Spyderco G-Clip Sheath Mount Knife Accessory for Fixed-Blade Knife Sheaths - GClIP
- UltiClip Slim 3.3

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-02-02*