Our XPS Tungsten Weights are now insert-free to allow greater sensitivity and easier line threading, particularly of thicker diameter lines. Environmentally safe, lead-free weights are 95% tungsten and 5% nickel. Since tungsten is much heavier and harder than lead, you can downsize your offerings, keep contact with the bottom, and increase sound attraction! Flippin' Weights are ideally shaped, with a rounded head and truncated base to penetrate matted grass and other heavy vegetation. Insert-free to allow greater sensitivity and easier line threading Environmentally safe Lead-free weights are 95% tungsten and 5% nickel Heavier tungsten lets you downsize Ideally shapedrounded head and truncated base penetrate vegetation better