Round Speckled Tungsten Firehole Stones™

The same precision tungsten as the standard rounds, finished with mottled surfaces for tyers who want the head of the fly to imitate rather than flash. At a Glance Pack: 18 beads. 12 at 4.0mm and 4.5mm Material: 95% tungsten alloy (W/Ni/Fe) Density: About 18 g/cm³, roughly 1.6 times lead Bore: Clean and uniform, no thread fraying Sizes: 2.0mm to 4.5mm Colors: 11 speckled colorways Ties Well As Caddis larvae and pupae Stonefly nymphs Hare's ear and naturalistic nymphs Buggy attractor patterns From the Bench Worth reaching for on pressured water, where a polished bead reads as a bead and a mottled one reads as part of the insect. On the Metal No tungsten bead is pure tungsten. Pure tungsten is brittle at room temperature and cannot be drilled and finished at this scale, so every tungsten bead on the market is a heavy alloy. Ours runs 95% tungsten with a nickel-iron binder, which is the high end of that range. You get the density without the brittleness.