The heaviest rig tubing available: this model will keep the line on the bottom so it doesn't disturb the fish interested in the rig. Dark Matter Rig Tubing is not only very heavy for its size but also very soft, allowing it to follow the contours of the bottom rather than remaining suspended in the spot as happens with stiffer tubing. Threading rig tubing can often be frustrating, but this Dark Matter solution has an internal diameter of 0.75 mm, allowing any line or braid to be inserted. It is also compatible with all Korda lead rig components, such as Tail Rubber. Available in weed green, silt brown, or gravel brown colors. Each pack contains 2 meters of tubing.