Barred Mayfly Tails - Hareline

The Barred Mayfly Tails (BMT) from Hareline Dubbin are a go-to synthetic tailing material for realistic mayfly nymph and dry fly patterns. Designed to perfectly imitate natural mayfly tails, BMT fibers feature crisp barring, consistent diameter, and just the right stiffness to keep tails splayed and balanced in the water.

These fibers are easy to work with, highly durable, and far more uniform than natural materials—making them ideal for production tying or anyone who wants clean, repeatable results at the vise.

Key Features

• Realistic barred appearance for lifelike mayfly imitations

• Synthetic fibers with excellent durability and consistency

• Ideal stiffness for properly splayed tails

• Easy to trim, stack, and tie in

• Colorfast and resistant to breaking or fraying

Best Uses

• Mayfly nymphs and emergers

• Dry flies and comparaduns

• Euro nymph patterns

• Tails, antennae, or slim legs on small patterns

Whether you’re tying PMDs, Baetis, March Browns, or custom nymph variations, Hareline Barred Mayfly Tails deliver clean looks, dependable performance, and fish-approved realism.

A fly-tying staple for trout anglers who care about the details.