TacKnives offer a wide range of high-quality and reliable Automatic OTF Knives that can be used by adventure enthusiasts, recreational, hobby and premium collectors. OTF Knives engineers/designers design the knives in house. Free Shipping, Hassle Free Returns and Warranty is provided all over the United States for our Butterfly, Italian Stiletto, Karambit, Switchblades, TK Pro, Mini and Large OTF Knives.