Mechanism: Manual Folding Knife with AXIS Lock System. Versatile: A solid EDC tool for hard-use utility tasks, the new 431BK-1 Redoubt variant doubles down on its unrelenting workhorse reputation with a new tanto blade profile for optimal everyday preparedness. Reliable: This knife is ready to work with CPM-D2 blade steel with a Cobalt Cerakote finish for improved toughness and strength and Ranger Green Grivory handle scales with a Forest Green textured Grivory overlay. YOURS, FOR LIFE: Benchmade will re-sharpen your knife to a factory edge for free, for the life of the knife. Benchmade LifeSharp services includes cleaning, oiling, adjustments, and re-sharpening.