1 1/2" soft grub body with a vibra-tail. The tail moves while the grub is swimming. The grub can be used on all the sizes of the Crappie Slider Heads. Also, it can be used with other jig heads. This grub has been proven to catch fish while casting, trolling, or vertical jigging. This is an original design by Charlie Brewer from the mid 1970s and has proven to be a very good lure for Crappie and PanFish. A lot of Bass have been caught on this lure too.