Simple, buggy, effective. Not much else that you can ask for in a nymph pattern. This one is very simple and catches trout everywhere they swim. It can imitate a caddis, a mayfly, a scud, or even a cranefly. The pink bead helps if you need a little bit of added attraction. If you're having a tough day fishing, tying one of these on will turn it around.
Sizes are as follows:
Sz. 12 - 4.0mm bead
Sz. 14 - 3.5mm bead
Sz. 16 - 3.0mm bead
Sz. 18 - 2.5mm bead