This Umpqua Tungsten Jigstone Nymph is an excellent pattern anywhere stoneflies are present. Tungsten bead head gets the fly into feeding zones quickly. Jigged hook reduces hangups. Rubber legs provide lifelike movement underwater. Per 2. Size: #8, #10, #12. Colors: Black, Golden. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Flies.