Synthetic glo-yarn strike indicators with o-ring attachments for easy placement. (3 pack) Directions for use: Select size and color based on conditions and weight of fly. Create a loop in the leader at the appropriate depth, and pass loop through rubber ring on Tip Topper. Pass Tip Topper through the newly created loop. Gently tug leader on either side of indicator to cinch and secure Tip Topper in place. Adjust length on leader as needed.