A putty indicator makes adjusting the depth and size of the indicator simple. Beyond that, it is reusable, biodegradable, and environmentally friendly. BioStrike can be rolled in a ball with wet fingers and applied anywhere on a leader, then removed and placed back in the container. FEATURES:- Putty strike indicator. - Easily create indicators to your desired size. - Use small dry flies to increase visibility. - Reusable. - Biodegradable. Directions for use: Wet fingers and remove Biostrike from the container; the amount depends on the weight of the flies being fished. Roll Biostrike into a football shape and apply to the leader at the desired depth. After fishing for the day, remove Biostrike from the leader and return to the container.