Each float in the Betts® Mr. Crappie Bobbers 2-1/2" Slippers 3-pack has an internal tube and an insert located on one end for simple line threading. These cigar-shaped floats rest high in the water and are designed to let you set your lure at the depth you need. The hard foam construction cuts down on breakage and spillage, and the yellow and green color combination and fluorescent finish increase visibility, allowing you to easily detect strikes.