The SF Flash Blend. One of the very best saltwater fly tying materials developed by well-known fly tier Steve Farrar, this blend of angel hair and slinky fiber is ideal for creating fresh and salt water bait fish imitations. The strands are strong and resilient, as this fly tying material can hold up as an element of a predator pattern and in saltwater flies. Just the right mix of color and flash create a natural look. Comes in 10" length fibers.