Echo-friendly buoyant strike indicators that come in 4 sizes – 3/8″, 1/2″ 5/8″, and 3/4″ The cork indicators land more softly than a plastic bobber, making them better for spooky or sensitive fish. The natural cork colored bottom of the indicator is less obtrusive as well. The 3/8″ size is a game changer for small streams or mini-rigging!