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 fish’s 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. 3 sizes to choose from.