The TB in the Rio Flies TB Sili-Leg Stone stands for Tungsten Bead, meaning that this stonefly nymph sinks mush faster than the un-beaded versions. The Pat’s Rubber Legs orSili-Leg Stone has been around for over a decade and usually relies on lead wraps for weight. With the explosion of Euro nymphing anglers are wanting very heavy flies. The addition of a tungsten bead to the regular pattern will satisfy this desire for a faster sink rate.

• Extra heavy with tungsten bead
• Stonefly nymph imitation
• For trout and other freshwater species
• Sold individually