They are made of soft & supple yet durable plastic. For Rigging, Drift fishing, thread these worms using the available Steelhead Worm rigging kit with detailed instructions. Add a Hard Fish Pill for extra flotation to keep worm out of snags and in the fishs strike zone. Or for Float fishing, use a weighted jig head. Put a dab of super glue on the shank of hook next to jig head to keep the worm from sliding down the hook.WARNING: Cancer and Reproductive Harm -www.P65Warnings.ca.gov