HMH Micro Tubing is very thin in diameter and is ideally suited for trout flies or small steelhead flies. Because it is not as ridgid as other sizes of tubing, it is best used in shorter lengths as well. It is great for patterns like a marabou mini leech and small baitfish patterns.
Micro Tubing works well with standard sized bead heads and coneheads. Use a lighter to flare the end to keep the bead or cone from sliding off.