Off Shore Tackle Tadpole Diving Weights offer the trolling angler a simple and easy alternative to using traditional divers to get lures down. The design of the in-line Tadpole features a flat faced trolling weight with two coast lock snaps. When you set your lure out the face of the Tadpole points downward and the coast lock stays at the top of the arm in the clipped position. When a fish strike the coast lock slides down the arm into the tripped position so you easily fight the fish. 99.9% lead free.