The Fox Edges Tubing Tungsten Heli Bead Kit contains 5 pieces and is designed for easy and safe assembly of heli-rigs. Each kit includes a rubber sleeve and a tungsten bead with a slot, where the sleeve is equipped with 2 ribs for adjustable resistance on the bead. The slot on the bead provides extra safety in case of line breakage. The beads are easy to attach with the Fox Tubing Threader and are compatible with Fox tubing and tubing of the same diameter, making them ideal for precise assembly of heli-rigs.