With its wide range of uses and subtle natural action, the Yamamoto Senko has quickly become a favorite with anglers worldwide. The beauty of the Senko is in its simplicity. The Yamamoto Senko may just look like a thick round plastic worm, but the fall rate created from a large amount of salt impregnated in the body drives fish mad. When rigged weightless, the Yamamoto Senko falls horizontally with a seductive side-to-side tail action.