The Aftco UBC6-BG Curved Unibutt is made from marine alloy using AFTCO's unique "swaging" process. The fishing rod butt and reel seat are unitized for minimizing weight and increased strength. The aligning pin-plug, gimbal, and fixed hood are locked in permanent alignment so that gimbal, reel and rod guides always line up exactly. The ferrules are precision-machined to ensure complete interchangeability of rod tip sections, and an "O" Ring on the ferrule prevents corrosion between ferrule and reel seat. A Teflon ring inside the collet nut assures a snug fit, prevents galling, and allows easy removal of the nut.