Cobra Tec Knives CTK-1 OTF Large Automatic Folding Knives 3.75in D2 Steel Partially Serrated Tanto Aluminum Alloy Black Handle. It features a 3.5-inch D2 steel blade with a black oxide finish. The blade is held open by a spring-loaded mechanism and can be deployed with a single button press. The handle is made of aluminum alloy and features a textured grip for a secure hold. The knife also has a pocket clip for easy carry. The Cobra Tec Knives CTK-1 OTF Large Knife is a great choice for self-defense or everyday carry. These knives are lightweight and easy to conceal but the D2 steel blade is capable of handling tough tasks. The spring-loaded mechanism makes it easy to deploy the blade quickly and the textured grip provides a secure hold. The pocket clip makes it easy to carry the knife on your belt or in your pocket. Specifications for Cobra Tec Knives CTK-1 OTF Large 3.75in Automatic Folding Knives: Manufacturer: CobraTec Knives Blade Length: 3.75 in Overall Length: 9.5 in Blade Material: D2 Steel Serrated: Plain Hand: Ambidextrous Knife Application: Folding Blade Included Accessories: 1 Blade Handle Length: 5.75 Handle Material: Aluminum Alloy Blade Finish: Black Oxide Sheath Material: Nylon Weight: 9 oz Quantity: 1 Closed Length: 5.75 in Features of the Cobra Tec Knives CTK-1 OTF Large Knife: Durable D2 steel blade Spring-loaded mechanism for quick deployment Textured grip for a secure hold Pocket clip for easy carry