The new airlock centerlock strike indicator is a versatile and innovative tool for fly fishing. It allows you to adjust the position of the indicator on the leader, slide it freely along the line, or rig it for break-away action. The patented O-Ring insert system ensures a secure and easy attachment without damaging the leader. The tapered clamping surfaces provide a firm grip on any leader size, from very fine to thick. The textured outer surfaces help you to rotate the indicator halves and identify the right one to tighten. The razor cut line retention slits prevent the line from twisting while you adjust the indicator. The new airlock centerlock strike indicator is made of eco-friendly materials that are durable and lightweight.