Microtech Scarab II Gen III D/E-S OTF Knife Tan Aluminum, Black M390MK by Tony Marfione (1180-1TA)

Microtech Scarab II Gen III D/E-S Tan Aluminum, Black M390MK by Tony Marfione (1180-1TA) – full-size tactical-class OTF automatic knife

The Microtech Scarab II Gen III D/E-S Tan Aluminum, Black M390MK by Tony Marfione (1180-1TA) is a full-size OTF automatic knife featuring the D/A system, designed as a robust construction for heavy-duty use in demanding conditions. This model expands the Scarab II Gen III line, combining a large blade, stable ergonomics, and a mechanism designed for quick deployment and retraction of the blade with a single thumb motion. The blade, made of Böhler M390MK steel with a D/E-S Spear Point profile, a flat grind, and a Black finish, is designed for effective piercing, controlled cutting, and high durability. The handle, made of 6061 -T6 aluminum / 3M Traction Tape Inlay in the Tan / Black configuration, an automatic OTF mechanism with a dual spring system, a Thumb Slide, a right/left-hand clip, tip-down orientation, and a glass breaker all reinforce the practical and tactical nature of the Scarab II Gen III model.

Böhler M390MK – Microtech’s powder steel for demanding use

Böhler M390MK is a high-performance powder steel developed for Microtech in collaboration with Böhler, designed with an emphasis on wear resistance, corrosion resistance, and long-lasting sharpness. In the Scarab II Gen III model, this material performs well when cutting straps, cords, tapes, cardboard, plastics, and technical materials, where edge stability and predictable blade performance are essential. The black coating gives the blade a rugged look and helps mask minor marks that develop during regular use.

D/E-S Spear Point and flat grind – symmetry, penetration, and control

The D/E-S (Double Edge-SpearPoint)  refers to a double-edged blade with symmetrical geometry, designed for precise tip control and effective piercing. Full-length grooves on both sides of the blade visually reinforce the construction and emphasize the technical character of the Scarab II model. The flat grind facilitates smooth cutting through materials while maintaining an optimal balance between cutting edge sharpness and durability. This combination allows the D/E-S variant to effectively blend the task-oriented nature of a large OTF blade with the high-quality craftsmanship typical of Microtech.

Dual OTF and Thumb Slide Mechanisms – Power, Speed, and Reliability

The Scarab II Gen III utilizes the D/A OTF automatic mechanism, which allows the blade to be extended and retracted using the same Thumb Slide. This generation features a dual spring system, increasing the mechanism’s operating force and improving smoothness of operation compared to older designs. The knurled slide, featuring a distinctive “X” pattern in the center, requires deliberate pressure, which enhances safety and reduces the risk of accidental activation. The design allows for comfortable use with either the right or left hand.

Tan Aluminum and 3M Traction Tape Inlay – a stable grip for a large OTF

The handle, made of 6061-T6 aluminum / 3M Traction Tape Inlay, was designed with a focus on rigidity, durability, and a secure grip. The aluminum body in Tan gives the knife a tactical, outdoor look, while the 3M Traction Tape Inlay enhances grip during heavy-duty use, even when wearing gloves or in less stable conditions. The jimping on the spine and belly improve grip control, and the sturdy right/left deep-carry, tip-down clip allows for discreet carrying of the knife. A glass breaker with a tungsten carbide ball expands the knife’s functionality in emergency situations.

Why Choose the Microtech Scarab II Gen III D/E-S Tan Aluminum?

The Microtech Scarab II Gen III D/E-S Tan Aluminum is designed for users who expect a large OTF automatic knife with robust mechanics, a stable handle, and premium-grade materials. The Böhler M390MK steel ensures long-lasting edge retention, the D/E-S Spear Point profile enhances precision during point-cutting tasks, and the D/A OTF mechanism allows for quick one-handed deployment and retraction of the blade. The handle, made of 6061-T6 aluminum with 3M Traction Tape Inlay inserts, provides a secure grip; the right/left-hand clip and tip-down orientation allow you to customize how you carry it; and the glass breaker reinforces the knife’s practicality. This is a full-size OTF knife for those who value strength, precision, and Microtech’s signature quality.

Key Features at a Glance

• Böhler M390MK — powder steel with high durability.
• D/E-S Spear Point — double-edged blade with symmetrical geometry.
• Flat grind — effective blade glide through material.
• Black — a black coating that masks minor scratches.
• D/A OTF — automatic blade deployment and retraction via a slide mechanism.
• 3M Traction Tape Inlay — a textured surface that improves grip stability.

Technical Data

Frequently Asked Questions

How do I care for and sharpen the Böhler M390MK steel in the Scarab II Gen III model?

Böhler M390MK steel should be cleaned and dried after use, especially after contact with moisture, sweat, or debris from the materials being cut. A diamond sharpener or a high-quality ceramic sharpening system works best for sharpening, as this highly wear-resistant powder steel requires an effective abrasive and a consistent sharpening angle.

How does the D/A OTF mechanism work in the Microtech Scarab II?

The D/A OTF mechanism allows you to extend and retract the blade by moving the same Thumb Slide. The blade moves back and forth along the Handle’s axis, so the knife can be operated with one hand without the need for a traditional side-fold mechanism.

What makes the D/E-S Spear Point profile unique?

D/E-S Spear Point refers to a double-beveled blade with symmetrical geometry, designed for precise tip control and effective piercing. This profile is well-suited for a full-size, task-oriented OTF knife.

What are the benefits of the 3M Traction Tape Inlay?

3M Traction Tape Inlay are inlays with a non-slip texture that improve grip stability. They make it easier to control a large OTF knife during heavy-duty work, even while wearing gloves or in less stable conditions.

Does the Microtech Scarab II Gen III have a glass breaker?

Yes, the handle features a glass breaker with a tungsten carbide ball. This is a structural element of the knife that expands its functionality in emergency situations, but it is not listed as a separate accessory in the technical data.

Prepared by: Specialists at Sharg® company – Your expert in EDC and cutting tools