Microtech Ultratech Gen IV D/E OTF Knife Purple Abrasion Half Tri-Grip Aluminum, Purple Abrasion M390MK by Tony Marfione (11224HT-1PUAA)
- Ultratech Gen IV D/E Purple Abrasion Half Tri-Grip Aluminum, Purple Abrasion is a full-size OTF automatic knife from Ultratech. Operating in D/A mode, Blade made of Böhler M390MK steel, precision machined aluminum Handle. Designed by Tony Marfione
473,19 €This product is intended for use only by adults with knowledge and experience in handling sharp cutting tools. Improper use of the knife can result in serious injuries. The blade is extremely sharp and can easily cut through skin and tissue; therefore, extra caution should always be exercised while cutting, and hands should be kept away from the cutting edge. To prevent the knife from slipping, it is recommended to cut on a stable, non-slip surface and avoid excessive force, which may cause uncontrolled blade movement.
Leaving the knife on the edge of a table, countertop, or in easily accessible places—especially where children are present—poses a significant safety risk. The knife should always be properly secured after use, ideally by placing it on a stable surface or storing it in designated knife blocks, protective sheaths, or magnetic strips. The knife should never be used for tasks it is not designed for, such as opening cans or prying objects, as this can damage the tool and lead to dangerous accidents.
A dull blade increases the risk of injury, as it requires more force and is more likely to slip from the material being cut. Therefore, it is essential to sharpen the knife regularly to maintain optimal sharpness. Additionally, proper cleaning and drying of the knife are necessary to prevent corrosion and bacterial growth. Periodic inspection of the handle and blade is recommended to check for cracks, chips, or looseness. If any damage is detected, the knife should be repaired or replaced immediately.
When using the knife, focus solely on the task at hand—avoid talking on the phone, watching television, or other distractions while cutting. Ensure proper lighting in the workspace for better visibility and control. Please note that some countries or regions have laws restricting the ownership and carrying of knives. Before purchasing or using this knife, verify that its use is legal in your location according to applicable regulations.
Following these safety guidelines will help ensure safe and effective knife use, minimizing the risk of accidents and extending the lifespan of the tool.
Microtech Ultratech Gen IV D/E Purple Abrasion Half Tri-Grip Aluminum, Purple Abrasion M390MK by Tony Marfione (11224HT-1PUAA) is a Gen IV OTF automatic knife featuring a D/E Dagger blade, M390MK, and a Half Tri-Grip handle.
Microtech Ultratech Gen IV – Purple Abrasion Half Tri-Grip
Microtech Ultratech Gen IV D/E Purple Abrasion Half Tri-Grip Aluminum, Purple Abrasion M390MK by Tony Marfione (11224HT-1PUAA) is a modern, premium-class OTF automatic knife, designed by Tony Marfione as an evolution of the flagship Ultratech platform. The fourth generation combines a Böhler M390MK steel blade, a symmetrical D/E Dagger profile, a Flat grind, and a distinctive handle made of aircraft-grade aluminum with a Purple Abrasion Half Tri-Grip finish.
The model features an automatic D/A OTF mechanism, which allows the blade to be extended and retracted using the same slide. The Gen IV configuration builds upon the classic Ultratech layout with a new drive architecture, improved operation, and refined grip zones. The Purple Abrasion variant stands out with its vibrant color scheme, technical milling, and a design intended for users who expect high-quality craftsmanship and Microtech’s signature aesthetic.
Böhler M390MK – Powder Steel for Heavy-Duty Use
Böhler M390MK is a high-performance powder steel used by Microtech in its premium knives. It combines high wear resistance, excellent corrosion resistance, and long-lasting sharpness. As a result, it performs well when cutting cardboard, tape, plastic film, cord, straps, and other materials used in everyday EDC tasks.
The Purple Abrasion finish gives the blade a distinctive, technical look and creates a cohesive design with the Handle, which features the same styling. The combination of a bold color with the blade’s functional geometry highlights the model’s collectible character, without sacrificing the functionality required of a full-size OTF knife.
D/E Dagger and Flat Grind – symmetry and precise tip performance
The D/E Dagger profile features a double-edged blade with symmetrical geometry. This design supports precise tip control, controlled point-to-point operation, and effective piercing. The central line of the blade is well-suited to the OTF design, where quick operation, stability, and unambiguous orientation of the blade relative to the handle are essential.
The Flat grind facilitates smooth passage of the blade through material and enhances control during cutting. Combined with a precisely shaped tip, it creates a blade designed for dynamic tasks while maintaining the distinctive D/E styling characteristic of Ultratech.
Fourth-generation D/A OTF automatic mechanism
The D/A OTF mechanism allows the blade to be extended and retracted using the same Thumb Slider. The blade moves along the axis of the handle, so the knife can be operated with one hand without the need for a traditional side-to-side deployment. This solution remains fast, intuitive, and works well in situations requiring immediate access to the blade.
Gen IV utilizes the Dual-Fuel Drive Train™ system, which improves smoothness of operation and reduces the force required to activate the slider. Milling in the area beneath the slide helps remove fine debris, helping to maintain the mechanism’s smooth operation during regular carry and use in demanding environments.
Purple Abrasion Half Tri-Grip – Aircraft-Grade Aluminum and a Secure Grip
The handle is made of Aircraft Aluminum, a material prized for its favorable combination of low weight, rigidity, and resistance to daily wear and tear. The Purple Abrasion Half Tri-Grip finish sets this variant apart from classic Ultratech versions and gives it a distinctly technical, collector’s-grade character.
The milled grip zones enhance control when deploying the blade and handling the knife, while the slim handle profile makes it easy to carry discreetly in a pocket. The titanium tip-down clip with a ceramic ball increases the durability of the contact point with the Handle, while the steel window breaker remains an integral part of the design intended for emergency use.
Why choose the Microtech Ultratech Gen IV Purple Abrasion?
The Microtech Ultratech Gen IV Purple Abrasion is designed for users who expect a full-size OTF automatic knife with advanced mechanics, a distinctive look, and premium materials. Böhler M390MK steel ensures excellent edge retention, the D/E Dagger profile supports precise tip control, and the Flat grind enhances cutting efficiency.
The aircraft-grade aluminum handle, Dual-Fuel Drive Train™ system, Half Tri-Grip milling, titanium clip, and glass breaker combine to form a cohesive design for those who want to combine OTF functionality with the distinctive aesthetics of Microtech’s limited-edition models.
Key Features at a Glance
- Böhler M390MK: a powder steel with high resistance to wear and corrosion.
- D/E Dagger: a symmetrical, double-edged blade for precise tip work.
- Flat: a grind that supports smooth and controlled cutting.
- Purple Abrasion: a distinctive finish on the blade and handle.
- Half Tri-Grip: milled grip zones for a secure hold.
- Dual-Fuel Drive Train™: a modern Gen IV drive system.
- D/A OTF: automatic blade deployment and retraction with a single slider.
Technical data
| Product Number | 11224HT-1PUAA |
| Product Name | Microtech Ultratech Gen IV D/E Purple Abrasion Half Tri-Grip Aluminum, Purple Abrasion M390MK by Tony Marfione |
| Overall Length | 217.17 mm / 8.55“ |
| Blade Length | 88.90 mm / 3.50” |
| Blade Thickness | N/A |
| Handle length | 128.27 mm / 5.05" |
| Handle thickness | N/A |
| Weight | 99.22 g / 3.50 oz |
| Blade material | Böhler M390MK |
| Blade hardness (HRC) | N/A |
| Blade profile | D/E Dagger |
| Edge type | Double Edge |
| Blade grind | Flat |
| Blade finish | Purple Abrasion |
| Handle material | Aircraft Aluminum |
| Handle finish color | Purple Abrasion Half Tri-Grip |
| Backspacer material | Aircraft Aluminum |
| Backspacer Color | Purple Abrasion |
| Clip | Right-handed, tip-down |
| Clip material | Titanium |
| Pivot pin | N/A |
| Lock | Slide Lock |
| Opening mechanism | Automatic, push/pull thumb slider |
| Additional accessories | None |
| Designer | Anthony Marfione |
| Brand | Microtech |
| Manufacturer | Microtech Knives |
| Country of origin | USA |
Frequently Asked Questions
How do I care for and sharpen Böhler M390MK steel?
Böhler M390MK steel should be cleaned and dried after use, especially after contact with moisture or dirt from the materials being cut. Diamond, ceramic, or CBN sharpening systems work best, provided they are used with a steady hand and without excessive pressure.
How does the D/A OTF mechanism work in the Ultratech Gen IV?
The D/A OTF mechanism allows the blade to be extended and retracted using the same slide. The blade moves along the axis of the handle, so the knife can be operated with one hand without the need for a traditional side-fold mechanism.
What is the Dual-Fuel Drive Train™?
Dual-Fuel Drive Train™ is the Gen IV drive system that improves the smoothness of blade extension and retraction. This solution reduces the force required to activate the slide, while maintaining the fast operation of the OTF mechanism.
How does the milling under the slide work?
The milling under the slide helps remove fine debris and prevents it from accumulating in the mechanism’s working area. This helps maintain smoother knife operation during regular use.
Does the Microtech Ultratech Gen IV have a glass breaker?
Yes, the handle features a glass breaker. It is an integral part of the design intended for emergency use, not a separate accessory listed in the technical data.
Prepared by: Specialists at Sharg® company – Your expert in EDC and cutting tools
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