The New and Improved Air-Lock Indicator – Fins and Feathers Bozeman
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The New and Improved Air-Lock Indicator

Air-Lock Indicators Are Back

The brand new 1/4″ Air-Lock Indicators have just arrived in our Bozeman fly shop! During the infamous Air-Lock absence of 2019 some interesting indicator tactics were adapted. That is a whole different story. Luckily until the new 3/4″ Air-Locks (the most popular and overall applicable size) show up we still have a few packs of retro 3/4″ Air-Locks. Without further ado, here are the specs for the all new biodegradable Air-Lock indicators.


The new biodegradable foam has more benefits beyond keeping our waterways cleaner. The new design out-performs the original plastic design in every way.

  • 30% Lighter: Easier, more efficient casting and delivery.
  • Suspends 25% more weight on the water.
  • Stealth: Neutral-colored post is less visible to fish, and the lighter overall weight lands softer on the water.
  • Sensitivity: Better strike detection.
  • Durability: No more leaks, dents, holes, cracks or pops!
  • Easier to see leader slot when attaching.
  • Hurts 38.6% less when you hit yourself in the back of the head on a forward cast.


We believe in keeping our waterways as clean as possible. We redesigned our popular strike indicators with biodegradable foam so those indicators that end up floating away for any reason will break down over time.

  • Not to be confused with “water soluble:” Air-Lock Biodegradable Strike Indicators will not dissolve or be compromised in any way during normal use.
  • Biodegrading happens when the material is left in the elements: mud, water, mulch, compost, etc. over a long period of time.

Rigging Tips

Air-Lock Indicator Rigging

Standard Rigging:

  • Unscrew the locking nut
  • Lay the butt section of your leader in the slot
  • Replace the locking nut and tighten down
  • Note: For smaller diameter leaders, you can remove the rubber washer for a tighter fit. This will not result in a damaged leader

90 Degree Rigging:

  • Remove the locking nut
  • Thread your leader through the locking nut and slide up to the butt section
  • Place leader butt section in the slot on top of the indicator
  • Tighten locking nut down on the post as shown with leader sticking out one side, then out the top