Strike King Coffee Tubes are scented with real coffee bean granules and coffee bean oil. This natural organic scent is incredibly attractive to fish. It causes them to hold onto the tube longer and masks human and plastic scents. Coffee granules give the tube a more natural earth tone tint that mimics the appearance of a bass favorite prey. They are salt impregnated too. As a result these Coffee Tubes will help you catch more fish! The Coffee Tube Pro Model features a hollow body at 3.5″ in length. Rig with an internal tube head jig for dragging, jigging or fishing offshore structure with the hook exposed. 8 per pack.