The Savage Gear Disc Weight replaces the disc weight(s) on the Sucker X-Tail or Burbot Tube, to add incredible versatility. Allows you to adapt your retrieve to change the sink rate, run deeper or shallower, track level or head-downthe possibilities are endless. Easy to add and remove. Adds retrieve versatility to X-Tail or Burbot Tube Change sink rate, run deeper or shallower, track level or head-down Easy to add and remove