RIO developed these heads as a tungsten alternative to lead core. They are supple, do not kink and sink like a stone.

T-14 (9 inches per second) weighs 14 grains per foot and is best for single-hand rods from 8 through 12 weight, and tips for double-hand rods.

T-17 (10 inches per second) is the heaviest and fastest sinking material of them all and makes light work of getting depth and casting big flies.

T-20 (10+ inches per second) sets a new benchmark in non-lead sink rates, makes lightwork of getting depth and casting big flies on the correct outfit.

Each 30 ft coil of T14 and T17 features a welded loop in both ends, allowing anglers to cut to the desired length and weight. T20 is supplied with heavy duty braided loops and sleeve for customising.

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