Microtech Dirac Delta D/E Stonewash Standard Full Serration 3.75in Folding Knife Black. This OTF knife offers functionality and reliability like never before. Specifications for Microtech Dirac Delta D/E Stonewash Standard Full Serration 3.75in Folding Knife: Manufacturer: Microtech Blade Length: 3.75 in Overall Length: 9.25 in Blade Material: M390 Steel Handle Color: Black Serrated: Fully Serrated Knife Application: Folding Blade Blade Finish: Stonewash Weight: 4.55 oz Last Chance: Yes Package Contents: Microtech Dirac Delta D/E Stonewash Standard Full Serration 3.75in Folding Knife Microtech 227-12: Dirac Delta D/E Stonewash Standard Full Serration 3.75in Folding Knife Black