The Air-Lock Strike Indicators 3pk features the most innovative locking mechanism in the world for attaching to your leader. Gone are the days of clunky plastic indicators - these have been overhauled and now boast a low-density foam construction, making them 30 percent lighter and more manageable when casting. Using the Air-Lock Strike Indicators is a breeze. Simply unscrew the cap, slot your tippet in, and secure it with the locking nut. With this easy setup, you'll be ready to fish in no time. Rigging: Unscrew the locking nut Lay the butt section of your leader in the slot Replace the locking nut and tighten it down For smaller-diameter leaders, remove the rubber washer for a tighter fit Features: Easy To Connect Mixed Colours 3 Per Pack 3 Sizes To Choose From