Tactical Extreme Karambit Knife | Spring Assisted Blade Red Handle The Tactical Extreme Karambit Knife has a super sharp blade made of 440 stainless steel that has been heat treated and powder coated black. With both a thub stud and thumb rest integrated into the blade design, the blade also features a solid assisted opening feature and steel locking spring to hold the blade open. The handle of the Tactical Extreme Karambit Knife is has a steel liner and solid aluminum grips that are annodized red. Has a finger hole as well. Specifications Overall Length: 7.5 Inches Blade Length: 3 Inches Closed Length: 5.5 Inches Blade Material: 440 Stainless Steel, Heat Treated Blade Thickness: 3mm Sharpness & Functionality: Very Sharp, Functional Pocket Knife Blade Features: Forward Curved Profile, Thumb Stud, Assisted Open, Black Finish Handle: Aluminum, Anodized Red, Steel Liner w Lock