Feature: 1. Strong magnetic design. Strong magnetic force for tight adsorption. Powerful magnet with strong adsorption. Get your line and hook in the right position with these premium weights. 2. Notch design. Notch design prevents hooks from coming off. Match the anti-slip buckle, holding the hook firmly. The disc sinkers won't get snagged up on rocks, plants, ect. 3. Meticulous workmanship. No burrs on the surface / not easy to scratch the hook's finish.