RIO T-8, T-14, T-17, T-20, SHOOTING HEADS 30' LOOPED (9,1m) Coil Pack 

T-8, T-11 & T-14 are level shooting head materials. T-8 weighs 8 grains per foot, T-11 weighs 11 grains per foot and T-14 weighs 14 grains per foot.  T-8 has a sink rate of 7 inches per second, 

T-11 at 8 inches per second and T-14 around 9 inches per second and.

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

The material is usually sold in a 30 ft pack. Anglers simply cut this level material to the length they need for a variety of fishing conditions, and then add a braided loop to each end to easily attach to the spey line. The most useful tip lengths from a 30 ft pack are 15 ft, 10 ft and 5 ft, though some anglers prefer 15 ft, 9 ft and 6 ft lengths.

The weight of T-14 makes it pretty heavy for the lighter lines to lift out. Most of the Skagit line sizes will not have a problem with 15 ft of T-14, but attaching it to the lighter WindCutter and PowerSpey lines can result in poor turnover and inefficient casts. As a simple guideline, use T-14 for the spey lines of #9 and bigger, T-11 for the #7 to #9 sizes and use T-8 for the lighter line sizes.