Microtech Dirac Delta D/E OTF Knife Natural Clear Aluminium, Black M390 by Tony Marfione (227-1NC)

Dirac Delta D/E Natural Clear Aluminum, Black is an enlarged OTF automatic knife from the Dirac series. Operating in D/A mode , it features a hellishly fast blade extension mechanism. Slider button on the side of the handle. 100% made and assembled in the USA. Designed by Anthony Marfione, knifemaker and owner of Microtech Knives.

The Dirac Delta® is an enlarged version of the first OTF D/A (Double Action) automatic knife in the Microtech® lineup, featuring a slider located in the handle's side recess. This model features a modern, ergonomic handle with curved lines inspired by the iconic HALO® model. The Dirac Delta® series features Microtech®'s signature premium solutions - patented screws, an innovative internal mechanism and a functional glass breaker. With an overall length of 9.25 inches, the Dirac Delta® is an excellent choice as an everyday use knife (EDC).

M390 Microclean® - a martensitic high-performance chrome steel produced by powder metallurgy. Due to its alloy concept, it has extremely high wear resistance and high corrosion resistance. Due to its high wear resistance, it adequately maintains the shape of the edge, so the blade stays sharp for a very long time (requiring minimal maintenance). Another of the advantages is resistance to the formation of “wire” during sharpening. The steel has a high chromium content of 20.0% (Cr) doped with 1.9% carbon (C), vanadium 4.0% (V), and is hardened between 59-61 HRC. This super steel is comparable to Carpenter's CPM 20CV or CTS-204P steels. Manufactured by Böhler Edelstahl in Kapfenberg, Austria.

Blade - machine ground D/E (Double Edge) Dagger type , sharpened on both sides with a long line of grain grooves on both sides of the blade for reinforcement. Coated with a black protective coating. The blade is brought out with a high flat grind (Flat Grind), providing excellent cutting properties. As a result, the knife has excellent piercing properties while maintaining its strength. The centrally placed grain further strengthens the blade. The strong mechanism of extending / retracting the blade with the help of the moled Thumb Slide, a stepped slide under the thumb requires for safety the application of a specific force to overcome the resistance of the spring. The method of opening provides seamless opening for both right and left-handed people.

Handle - made with excellent precision in 3D technology on CNC milling machines, from brushed and polished aluminum 6061-T6. The surface texture of the Handle makes the knife non-slip in the hand during use. There are notches (jimping) on the back and bottom of the handle for a more secure grip. A distinctive feature is the location of the slider, in a recess milled into the side of the handle. This allows the hand to lay more naturally when opening and closing the knife. The slim profile and the milled two-position (right/left) solid deep-carry clip allow the knife to be carried discreetly in the pocket, in tip-down (blade tip down) position. The clip bears the Microtech logo, serial number and production date. The Handle is finished with glass breaker, a solid steel triangle, into which a tungsten carbide ball has been pressed.

Technical data:

Product number: 227-1 NC
Product name: Dirac Delta® D/E Natural Clear Aluminum, Black Standard

Overall length: 235.0 mm / 9.25"
Blade length: 95.2 mm / 3.75"
Blade Thickness: 3.0 mm / 0.12"
Handle length: 140.0 mm / 5.5"
Handle thickness: 12.7 mm / 0.5"
Weight: 129.0 g / 4.55 oz

Blade material: Böhler M390
Blade hardness: n.d.
Blade grind: Flat
Blade finish: Black coating

Handle material: 6061-T6 Aluminum
Handle finish color: Natural Clear
Backspacer material: 6061-T6 Aluminum
Backspacer color: Natural Clear

Clip: Right/left, Tip-down
Clip material: Stainless Steel

Pivot mechanism: n.d.
Locking mechanism: Slide Lock
Opening method: Automatic, push/pull Thumb slider
Additional accessories: none

Designer: Anthony Marfione
Brand: Microtech
Manufacturer: Microtech Knives
Country of origin: USA

Developed by: the Sharg® company