The AFTCO Roller-Troller Pro features a ball bearing swivel between the release clip and the halyard attachment arm. With the addition of the bearing swivel, the release clip always rides in the correct position with less tangles in your rigger gear as the fishing line is further out from the halyard. The outrigger clip allows for precise positioning of trolling lures or baits. The Roller-Troller swings open cleanly when a fish strikes for a perfect release of the line.