The Catfish Pro Dropdown Sinking Rig Tube is a heavy, soft sinking rig tube designed to keep rigs and line on the bottom. It works well as uptrace tubing and suits many rig applications, particularly for catfishing where heavier lines are in play. The tube is supplied in a single 2m piece and is now available in Silt and Weed Green. - Diameter: 3mm - Internal diameter: 1.8mm, allowing use with thicker catfishing lines - Supplied in a single 2m piece