The Spro BBZ-1 Rat Replacement tail is made for the 10in version of the Spro BBZ1 Rat swimbait. This replacement tail comes in many different color options to choose from. Simply replace the tail on the 10in Spro Rat swimbait with the color of your choice. Use a toothpick to keep the tail in place. See video below for more information on how to get the tail attached to your rat bait.