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Semperfli Tungsten Slotted Beads 3.8mm (5/32 inch) Rainbow
Our editorial team reviews specifications, product data, and field-use information to keep pages accurate.
$4.25
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SKU: BTBD038RBW-886741003322
Overview
These slotted tungsten beads are built for fly and jig patterns that need added weight and a clean hook fit. The enlarged slot recess is designed to help the hook pass around the gape more easily, making them practical for tying compact, sink-focused rigs. At 3.8 mm and 0.411 gm per bead, they suit anglers looking to get flies down quickly without adding unnecessary bulk. Each bag includes 10 rainbow-colored beads for tying a small run of patterns or replacing worn components.
Why Hunters Choose the Semperfli
Tungsten Alloy
Construction provides substantial weight in
Slotted Design
Enlarged recess helps the hook
Sized Flies
Jigs needing added weight to
Pack Includes
10 beads, offering practical quantity
Rainbow Finish
Adds a visible color option
Key Features
- 3.8 mm (5/32 inch) slotted tungsten beads for flies and jigs
- Enlarged slot recess helps position hooks around the gape
- Made from 97% tungsten alloy
- Designed weight: 0.411 gm
- Pack includes 10 rainbow-colored beads
Best Used For
- Fly tiers needing compact weighted beads for nymphs and jigs
- Anglers building patterns that require easy hook alignment through the enlarged slot
- Users wanting a 3.8mm bead size for quick sink rates in small flies
- Tiering multiple flies from one pack, with 10 rainbow beads included
- Those matching bead color accents without adding bulk to the fly
Specifications
| Beads Per Pack | 10 |
|---|---|
| Color | Rainbow |
| Designed Weight | 0.411 gm |
| Diameter | 3.8 mm (5/32 inch) |
| Hook Compatibility | Allows hooks around the gape of the hook |
| Material | Tungsten Alloy 97% |
| Product Packaging | Bag |
| Slot Recess | Enlarged |
| Use | Flies and jigs |
Pros
- Tungsten alloy construction provides substantial weight in a compact 3.8mm bead.
- Slotted design with enlarged recess helps the hook pass around the gape more easily.
- Sized for flies and jigs needing added weight to sink quickly.
- Pack includes 10 beads, offering practical quantity for multiple rigs.
- Rainbow finish adds a visible color option for fly and jig builds.
Considerations & Trade-offs
- Sized at 3.8 mm (5/32 inch), these beads are intended for smaller fly and jig applications, so they may not suit larger patterns or heavier rigs.
- The slotted design helps with hook placement, but it also means the bead is purpose-built for slotted-bead setups rather than universal use across all hook styles.
- Pack count is 10 beads per bag, which is practical for testing or tying a few flies, but may require repeat purchases for higher-volume tying.
- Rainbow finish is a visual option, so it may be chosen for appearance as much as weighting; if you want a more subdued look, this color may not be the right fit.
Suggested Comparisons
- Fly tying beads
- Tungsten beads
- Slotted beads
- Jig tying components
Suggested Accessories
- Fly tying thread
- Fly tying hooks
- Fly tying tools
- Fly storage box
Frequently Asked Questions
What size are these beads, and what hooks are they intended to fit?
The listed diameter is 3.8 mm (5/32 inch). The description says the slotted design has an enlarged slot recess to help get the hook around the gape, but it does not specify exact hook sizes.
How many beads come in a pack?
The specifications list 10 beads per pack.
What material are these beads made from?
The product data lists the material as tungsten alloy, 97%.
What color are these beads?
The listed color is Rainbow.
Are these beads meant for flies, jigs, or both?
The description says tungsten slotted beads are perfect for flies and jigs.