CY-Buity Black New Tackle Aluminum Alloy Durable 4pcs Quick Release Bite Alarm Adapter Connector Fishing Removable adapter, overall dimensions: 60 x 16 x 16 mm, inner diameter of the thread: approx 8.40 mm, diameter of the thread: approx 9.10 mm, aluminum alloy material. Made from metal replacement part, you can combine previously bite indicator with adapter so that the preparation time is effectively reduced. Compact design, solid, durable and long lasting. High degree of hardness, corrosion-resistant and wear-resistant. 4p/Set, you can use it according to your desire, compact volume, easy to carry.