CobraTec Knives CTK-1 Small OTF Automatic Folding Knife 2.75in D2 Steel Drop Serrated Blade Od Green Handle. The handle is designed from high-grade aluminum alloy and features a D2 steel blade. The knife is ambidextrous as the pocket clip can be switched to either side of the handle depending on your preference. Specifications for CobraTec Knives CTK-1 Small OTF 3.75in Automatic Folding Knives: Manufacturer: CobraTec Knives Quantity: 1 Package Contents: CobraTec Knives CTK-1 Small OTF Knife Nylon Sheath CobraTec Knives SODCTK-1SDS: CTK-1 Small OTF Knife 2.75in D2 Steel Drop Serrated Blade Od Green 7in