CobraTec Black Scalpel Auto, 5" Overall, Aluminum Handle. CobraTec Black Scalpel Auto, 5" Overall, Aluminum Handle. Our OTF Scalpel is crafted from CNC-machined 6061-T6 aircraft-grade aluminum. It offers a lightweight yet robust build designed to withstand everyday use. The tool features a quick-deploy mechanism and accepts standard size 23 replaceable blades for surgical-grade sharpness. Built for everyday carry, it includes a secure pocket clip and a lanyard hole for versatile carry options. Ideal for field work, as a box cutter, detailed crafting or for emergency kits. NOTE: Use proper tools and care when changing disposable blades. See Video. Specifications Blade: Replaceable size 23 Scalpel Handle Length: 3 inches Overall Length 5 inches Weight: 1.3 ounces Right Hand Carry Clip Lanyard Loop