Bass Pro Shops XPS Tungsten Worm 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. The bullet shape slips through cover naturally, while a concave base cradles the worm in place. Sizes: 1/8 oz. (per 4), 3/16 oz. (per 4), 1/4 oz. (per 3), 5/16 oz. (per 3), 3/8 oz. (per 3), 1/2 oz. (per 2). Colors: (001)Unpainted, (002)Red, (017)Watermelon Seed, (926)Black (not shown), (972)Green Pumpkin. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Weights.