DescriptionThis charcoal-colored nontoxic, Tungsten-based product is biodegradable and reusable, making it an environmentally friendly alternative to split shot and other lead based weight. The weight and depth are easily adjustable, to make sure that a nymph always finds the bottom.FeaturesTungsten putty weightNon-toxicNon-leadReusableCharcoal colorCan be used as temporary bead head for nymphs20 gramsHow to UsePinch off desired amount from container. Apply to leader in the shape of a football at desired location. Dip in water to harden. Remove or change the size when needed.