Brassonic Discs

Unlike traditional round beads, these discs are flat and designed to slide onto the hook shank to create a specific profile. They are particularly effective for adding weight while maintaining a distinct, wider silhouette that pushes more water and alters the fly's swimming action.

They are versatile enough for both. While they are a staple for tube fly construction, they can also be slid onto the shank of standard hooks to add weight and change the fly's movement profile.

The size selection depends on the bulk of your fly pattern and the desired sink rate. Use the 8mm discs for smaller, more streamlined patterns, and opt for the 10mm discs when you need extra weight to get your fly down quickly or when tying larger, bulkier flies that require a wider profile.

Yes, they significantly impact fly action. The flat surface area of the disc creates more resistance than a standard bead, which can cause the fly to wobble or dart more aggressively on the retrieve, helping to trigger strikes.

Brass is lighter than tungsten, so these discs are better suited for fine-tuning the sink rate and action rather than acting as a primary deep-water weight. If you need to get a fly to the bottom of a fast-moving river very quickly, you might need to pair them with additional underbody weight.