Adding some noise can make a fly more productive. You can place a rattle inside some Mylar tubing or embed it in epoxy for best results. These rattles
4.5 Floating Hollow Illustohog W/ Glass Rattles - Illustrious Action
3mm x 18mm Rattles - Cast Cray Outdoors
Wapsi Fly Rattles - 3mm
Single steel ball inside a vacuum sealed glass tube. One end is rounded and the other is flanged. These are loud rattles that add additional
Glass Tube Rattles
6th Sense Rattle-X glass rattles –
Adding a glass rattle to a fly can produce incredible results. Fish are often attracted to the loud rattling sound that these give off and they can be the difference between a good or bad day on the water. Place a glass rattle inside mylar tubing, embed it in epoxy, or tie it onto a long shank hook for best results. These high quality rattles are made of laboratory-grade Pyrex glass and are extremely durable. Great for fresh and saltwater streamer patterns.
Hareline Glass Rattles 5mm
50pcs 4mm 3 balls Jig Fishing Lure Glass Rattles Insert Tube Rattles Shake Attract Fly Tie Tying Fishing rattle - AliExpress
D.O.A glass rattles – Rebel Fishing Alliance
The Glass Worm Rattle from Jethro Baits is a nice little accessory for your bait. This rattle is 4mm and was designed for worms but can work with any soft plastic. Made with a glass body with beads inside to make a loud high pitch knocking noise. Come 12 to a pack.
Jethro Baits Glass Fishing Rattles 3mm