Microtech Dirac Delta D/E OTF Knife Orange Tangerine Aluminium, Stonewashed M390MK by Tony Marfione (227-10OT)
- Dirac Delta D/E Orange Tangerine Aluminium, Stonewashed, a larger version of the OTF automatic knife. Operates in D/A mode and features a quick blade-ejection mechanism. Slider button on the side of the handle. Designed by Tony Marfione
0,00 €Microtech Dirac Delta D/E Orange Tangerine Aluminum OTF Folding Knife, Stonewashed M390MK by Tony Marfione (227-10OT)
The Microtech Dirac Delta 227-10OT is a full-size OTF automatic knife with significantly larger dimensions than the standard Dirac, featuring a double-edged M390MK steel blade and an Orange Tangerine aluminum handle. The distinctive front slide controls the double-action mechanism, and the large, 96.27 mm-long blade emphasizes the utility-oriented design.
The Double Edge Dagger profile, flat grind, and stonewashed finish create a functional combination designed for controlled cutting and to minimize the visibility of minor wear marks. Despite an overall length of 238.76 mm, the handle is only 10.67 mm thick, allowing the body to maintain a relatively slim profile.
M390MK – Steel for a Large OTF
M390MK was developed for Microtech as a variant of M390 steel with properties tailored to the manufacturer’s requirements. High abrasion resistance helps both edges stay sharp for a long time, while excellent corrosion resistance facilitates the daily use of a large OTF automatic knife in a variety of conditions.
Double Edge Dagger and stonewashed
The symmetrical Double Edge Dagger profile features two full cutting edges and a centrally aligned tip. The flat grind gives the blade versatile performance characteristics, and the stonewashed finish minimizes the visibility of fine scratches, scuffs, and marks resulting from regular use.
Orange Tangerine Aluminum and Double-Action OTF
The handle is made of aluminum in a vibrant Orange Tangerine color. Its design also incorporates the rear section, which serves as a backspacer, ensuring the body remains compact and cohesive. The front slide controls the Double Action OTF mechanism, and the steel clip can be positioned on the right or left side in a tip-down configuration.
Key Features at a Glance
- M390MK – steel developed for Microtech.
- Double Edge Dagger – two cutting edges.
- Flat – flat grind.
- Stonewashed – utility blade finish.
- Orange Tangerine Aluminum – striking aluminum handle.
- Double-Action OTF – automatic blade deployment and retraction.
- Front Slider – central mechanism control.
- 4.32 mm – substantial blade thickness.
- 10.67 mm – slim handle thickness.
- Tip-Down Clip – reversible steel clip.
Technical Data
| Product Number | 227-10OT |
| Product Name | Microtech Dirac Delta D/E Orange Tangerine Aluminum, Stonewashed M390MK by Tony Marfione |
| Overall Length | 238.76 mm / 9.40" |
| Blade Length | 96.27 mm / 3.79“ |
| Blade Thickness | 4.32 mm / 0.17” |
| Handle Length | 142.49 mm / 5.61“ |
| Handle thickness | 10.67 mm / 0.42” |
| Weight | 124.74 g / 4.40 oz |
| Blade material | M390MK |
| Blade hardness (HRC) | N/A |
| Blade grind | Flat |
| Blade finish | Stonewashed |
| Handle material | Aluminum |
| Handle finish color | Orange Tangerine |
| Backspacer material | Aluminum |
| Backspacer color | Orange Tangerine |
| Clip | Right/left, tip-down |
| Clip material | Stainless Steel |
| Pivot pin | N/A |
| Lock | OTF Double Action |
| Opening Mechanism | Automatic, OTF Double Action |
| Additional Accessories | N/A |
| Designer | Anthony Marfione |
| Brand | Microtech |
| Manufacturer | Microtech Knives |
| Country of origin | USA |
Frequently Asked Questions
What makes the M390MK stand out?
The M390MK offers high wear resistance and excellent corrosion resistance. Its large double-edged blade helps maintain the sharpness of both edges for a long time and reduces the frequency of full sharpening.
How do you sharpen the Double Edge Dagger?
It’s best to use a precision guide system and sharpen each edge separately. It’s important to maintain the same angle on both sides to preserve symmetry and keep the tip centered.
How does the Dirac Delta mechanism work?
The Double-Action OTF mechanism automatically extends and retracts the blade using a front slide. This allows the entire operation to be performed with one hand, without manually folding the blade.
What are the benefits of the stonewashed finish?
Stonewashed gives the blade a matte, irregular surface that effectively hides minor scratches and signs of wear. It’s a practical finish for a large knife intended for frequent use.
How does the Dirac Delta differ from the Dirac?
The Dirac Delta is noticeably larger and heavier, with a longer blade and a larger handle. However, it retains the family’s signature front slide and Double-Action OTF mechanism.
Prepared by: Specialists at Sharg® company – Your expert in EDC and cutting tools







