Great scud, sow bug, cranefly, or caddis pattern! Tied with a heavy tungsten bead these will get down fast, the mm measurement next to the size represents the diameter of beadhead used.
A minimum quantity of 2 flies of the same size has been set for this item due to the staff time and labour it takes to fulfill fly orders. In our experience it's always nice to have a spare if you happen to lose one on a rock or tree branch too!