If you are looking for a solution to add weight to your tube flies then you should check the Pro Sportfisher weight system. The Pro Sportfisher Flexi Weight system fits perfectly with the FlexiTube, the Pro Nano Tubes and Pro Classic Tube (2,2mm). More than that has an extra advantage: It can be used as a body and weight combined, or integrated under the fly’s dressing.
Pro Flexi Weight Details:
All sizes are available in 4 colors which allows you to use as both weight and body in the “no-body” style of tube fly. The outer diameter of the FlexiWeight is 3,2mm, so if you slip one onto a FlexiTube, it fits perfectly with he thick part of the tube. This combination allows you use the thick part of the FlexiTube to hold your hook and if you want, the FlexiWeight can be hidden by tinsel or dubbing and integrated completely into the dressing of the fly.
A small amount of super glue fixes the FlexiWeight permanently to the tube, which is necessary if you want to tie over the FlexiWeight.
** Pro Sportfisher Pro Drop Weight will fit all: Pro Microtube, Pro Nanotube, Pro Flexitube 40/40 and Pro Classic Medium tubing options** **Pro Flexi Weight in sizes X-Large and XX-Large will be longer than the tying surface of a Pro Microtube**