Microtech Hera II Mini S/E Recurve OTF Knife Black Aluminium, Black M390MK by Tony and Sean Marfione (1705M-1T)

Microtech Hera II Mini S/E Recurve Black Aluminum, Black M390MK by Tony and Sean Marfione (1705M-1T) – a compact, premium-class OTF automatic knife

The Microtech Hera II Mini S/E Recurve Black Aluminum, Black M390MK by Tony and Sean Marfione (1705M-1T) is a compact OTF automatic knife featuring the D/A system, designed as a lightweight, precise, and exceptionally refined carry for everyday use. The model combines the technical aesthetics of the Hera series with the practical speed of the Out The Front mechanism, in which the blade extends and retracts along the Handle axis using a Thumb Slide. The blade, made of Böhler M390MK steel, with an S/E Recurve profile, a flat grind, and a Black coating, is designed for effective cutting, high durability, and control when working with EDC materials. The handle, made of 6061-T6 aluminum, maintains a slim profile and very low weight, while the titanium clip made of 6AL4V titanium and a rollerball facilitates comfortable, smooth carrying of the knife in a pocket.

Böhler M390MK – Microtech powder steel for precision OTF

Böhler M390MK is a high-performance powder steel developed for Microtech in collaboration with Böhler, designed with a focus on wear resistance, corrosion resistance, and long-lasting sharpness. In the compact Hera II Mini model, this material performs well when cutting tape, plastic wrap, cardboard, cord, and other materials encountered in everyday use. The stable edge performance ensures predictable cutting despite the knife’s small size, and the Black coating gives the blade a discreet, technical look and reduces light reflections.

S/E Recurve and flat grind – a curved edge for effective cutting

The S/E Recurve profile features a slightly recessed, curved edge line that helps draw the material into the cut. As a result, the knife handles straps, ropes, plastic film, thin plastic, and cardboard well, maintaining smooth blade movement. The flat grind provides optimal working geometry, combining cutting efficiency with adequate blade strength. The central grain visually and structurally reinforces the blade, emphasizing the model’s technical character and its connection to Microtech’s tactical line.

6061-T6 Aluminum and D/A OTF – quick one-handed operation

The handle, made of 6061-T6 aluminum, is precision-machined to maintain rigidity, lightness, and a slim profile that is comfortable for everyday carry. The surface texture and jimping on the spine and bottom improve grip control without overcomplicating the design. The D/A OTF mechanism allows the blade to be extended and retracted using the same Thumb Slide, enabling intuitive one-handed operation. The clip made of 6AL4V Titanium and equipped with a rollerball reduces friction when sliding the knife into a pocket, while the integrated glass breaker expands the model’s functionality in emergency situations.

Why choose the Microtech Hera II Mini S/E Recurve Black Aluminum?

The Microtech Hera II Mini S/E Recurve Black Aluminum is designed for users who expect an OTF automatic knife with a compact size, lightweight construction, and high-quality craftsmanship. Böhler M390MK steel ensures long-lasting edge performance, the S/E Recurve profile enhances cutting efficiency, and the D/A mechanism allows for quick one-handed deployment and retraction of the blade. The handle made of 6061-T6 Aluminum offers durability with very low weight, and the right/left tip-down clip allows you to adjust the carrying style to your preference. This is a modern OTF automatic knife for those who value precision, smooth operation, and a compact premium design.

Key features at a glance

• Böhler M390MK — high-performance powder steel.
• S/E Recurve — a curved edge that increases cutting efficiency.
• Flat grind — smooth blade glide through material.
• Black coating — a technical, low-reflective blade finish.
• D/A OTF — automatic blade deployment and retraction via a slide mechanism.
• 6AL4V Titanium — titanium clip with a rollerball.

Technical data

Frequently Asked Questions

How to care for and sharpen the Böhler M390MK steel in the Hera II Mini 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?

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 classic side-to-side opening motion.

What makes the S/E Recurve profile unique?

The S/E Recurve has a slightly curved edge that helps pull the material into the cut. This geometry works well with tape, cord, plastic film, cardboard, and other materials that require an effective, controlled pull of the blade.

What is the rollerball in the clip used for?

The rollerball in the titanium clip makes it easier to slide the knife into your pocket and remove it without excessive friction. This practical solution improves everyday carrying comfort and reduces wear on the pocket edge.

Does the Microtech Hera II Mini have a glass breaker?

Yes, the model features an integrated glass breaker. 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 table.

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