Sporting a classic tube shape, Strike King®'s Coffee Tubes are enhanced with real coffee bean granules and coffee bean oil to give the tubes an earthy tinge and a naturally strong scent/taste big bass are eager to slurp up. Not only does the coffee scent/flavor entice and encourage fish to hold the bite longer, it also works to mask human scents. They are salt-impregnated too! The 3-1/2'' Coffee Tube has a hollow head and is most effective when rigged with an internal tube jighead for dragging, jigging, or fishing structures with the hook exposed.