NóMicrotech Scarab II Gen III Executive D/E-S OTF Knife Tan Aluminum, Stonewashed M390MK by Tony Marfione (1181-10TA)

Microtech Scarab II Gen III Executive D/E-S Tan Aluminum, Stonewashed M390MK by Tony Marfione (1181-10TA) – OTF automatic knife

The Microtech Scarab II Gen III Executive D/E-S Tan Aluminum, Stonewashed M390MK by Tony Marfione (1181-10TA) is a full-size OTF automatic knife featuring the D/A system, designed as an advanced tactical design with a more elegant, functional finish. This model expands the Scarab II Gen III line, combining a powerful blade deployment mechanism, a large blade, and a precision-machined aluminum handle. The blade, made of Böhler M390MK steel, features a D/E-S Spear Point profile, a flat grind, and a Stonewashed finish, creating a configuration optimized for effective piercing, smooth cutting, and high durability. The handle is made of 6061-T6 aluminum in Tan, and features an automatic OTF mechanism with a dual spring system, a Thumb Slide, a right/left clip, tip-down orientation, and a glass breaker, all of which underscore the practical nature of the Executive Scarab II model.

Böhler M390MK – Microtech powder steel for heavy-duty 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 Executive 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 Stonewashed finish gives the blade a technical, workhorse appearance and helps mask minor scratches that occur during regular use.

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

The D/E-S Spear Point profile features a double-beveled blade with symmetrical geometry, designed for precise tip control and effective piercing. Full-length grain 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 and durability. This combination ensures that the Executive D/E-S model effectively combines practical efficiency with Microtech’s signature precision craftsmanship.

Dual OTF and Thumb Slide Mechanism – 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 smoothness compared to older designs. The knurled slide with 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 both the right and left hand.

Tan Aluminum – a stable handle for a large OTF

The handle made of 6061-T6 Aluminum was designed with an emphasis on rigidity, durability, and a secure grip. The aluminum body in Tan gives the knife a tactical, subdued character. Jimping on the spine and underside improves grip control, and the massive right/left deep carry clip, tip-down, allows for discreet carrying of the knife. A window breaker with a tungsten carbide ball expands the knife’s functionality in emergency situations.

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

The Microtech Scarab II Gen III Executive D/E-S Tan Aluminum is designed for users who expect a large OTF automatic knife with smooth operation, a strong blade, and an elegant yet tactical finish. 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 provides a stable grip, the right/left clip and tip-down orientation allow you to customize how you carry it, and the glass breaker reinforces the tool’s utility. This is a full-size OTF knife for those who value power, precision, and Microtech’s signature quality.

Key features at a glance

• Böhler M390MK — high-performance powder-coated steel.
• D/E-S Spear Point — double-beveled blade with symmetrical geometry.
• Flat grind — effective blade guidance through the material.
• Stonewashed — a rugged finish that masks minor imperfections.
• D/A OTF — automatic blade extension and retraction via a slide..

Technical data

Frequently Asked Questions

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

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

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

The D/A OTF mechanism allows the blade to be extended and retracted by sliding the same Thumb Slide. The blade moves forward and backward along the handle axis, so the knife can be operated with one hand without the need for a classic side-fold mechanism.

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

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.

Does the Microtech Scarab II Gen III Executive 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