AFTCO SHD swivel tops are designed for heavy wire line fishing and also work great as teaser rod fishing roller tops. Â Swivel tops are designed to keep the wire line in the center of the roller - so it touches only the roller and the Fuji® Ring in the bail - eliminating wear on the sides of the frame. Â AFTCO swivel tops are equipped with our super-braided line compatible modified rollers and they are virtually foulproof, and feature AFLON bearings for superior performance and lasting lubrication.