The Tronixpro Pulley Beads Large are an innovative solution for making pulley rigs. Traditionally, pulley rigs were made with standard swivels, which increased the risk of breakage by concentrating the force of the cast on a small part of the line. The Tronixpro Pulley Beads consist of a strong rolling swivel, incorporated into a durable plastic housing, which distributes the load of the cast over a wider area. This prevents damage to the line and provides a stronger and safer rig. Although these beads are specifically designed for pulley rigs, they are also ideal for Portland style rigs and can serve as a short boom when making one up / two down boat rigs.