Want a worm that can be caught with a tough lake, can you make a trailer that fits the devil jig? Development started based on such voices. Under the supervision of Masatoshi Hirakawa, we designed from scratch and thoroughly pursued the action and shape required for the trailer of the devil jig. Due to trial and error, the "Devil Shaker" was completed. The tail action for using the mouth of a high-pressure bass realizes a unique movement not found in other worms. Not only the trailer of Smoraba, but also down shots, light caro, etc. are supported at a high level, and although it is a small worm at the test stage, it catches a lot of dangerous fish, and the track record is with origami. Although it is small, it has a finish suitable for the title of "Devil".