Fighting Butt Adapter Plugs can be attached to a reel seat and it makes possible to coil your own custom fighting butt made with Fighting Butt Extension stem in to the reel seat. When fighting butt is not used, twist ATC Fighting Butt Cap in to the plug to prevent water getting inside the reel seat.

Suitable for ATC (American Tackle Company) fly reel seat models: A5, A10, AL8, AL10, 3UL and NS102. Length of the piece is approximately 26,6 mm, and the diameter of the section that fits inside the reel seat is 15,3 mm and 9,4 mm. Measurements might have some tolerance.