Tungsten Loaded Tube is significantly heavier than leadcore and is exceptionally supple, so it follows lake-bed contours, keeps the last few feet of mainline protected and anchors it hard to the bottom.
The 0.65mm internal bore is easy to thread, even accepting tapered leaders and the outside diameter is a good fit for a variety of tail rubbers and rig sleeves.
Significantly heavier than leadcore
Follows the bottom
Protects line from damage
Anchors line hard to the bottom
0.65mm internal bore
Tube diameter fits a variety of tail rubbers and rig sleeves
Non-flash surface finish