Enhanced Sensitivity: The pp material head is designed to tighten the line, significantly improving the sensitivity for detecting fish bitesEasy to Use: Simple attach this fishing swing chain to your existing fishing alarm (not included), it provides bite alerts through gentle shakes, ensuring a relaxed and enjoyable fishing sessionConvenient Design: Simply unscrew the head to insert a glow stick (not included) as fishing bites indicator, making it easy to locate your fishing rod during night fishingSturdy Construction: Made from pp and stainless steel materials, alerts swingers carp fishing tackle for bite alarms are lightweight yet sturdyPackage Includes: 2 pieces bite indicators chain swingers are great fishing tools during night fishing or in weak light environment Specification: Material: Stainless Steel, PP Size Chart: Total Length: 33cm/12.99inchHead: 7.5cmx1.8cm/2.95inchx0.71inch Package Includes: 2 PiecesFishing Bite Alarm Chains Swingers Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.