The Texas Toothpick knife is another classic pattern from the early 1900's. This slender single-hinge pocket knife is a very popular "daily carry" knife due to its surprisingly versatile Clip blade and its ability to disappear in your pocket when it's not needed. This pattern is actually based off of a traditional fishing knife, with its long Fillet blade, and is occasionally configured as a double with the addition of a Pen blade or Fish Scaler.