Tungsten carbide powder. W2C. Ideal material for fishing weights. Environmentally friendly. High-density, super-hard material powder. Tungsten carbide (W2C) powder. Particle size: 150-200 microns Contents: 500g With spoon Environmentally friendly fishing weights. Tungsten carbide (W2C) has a specific gravity of approximately 17.15 g/cm³. In comparison, iron has a specific gravity of approximately 7.85 g/cm³, and lead has a specific gravity of approximately 11.34 g/cm³. Tungsten carbide is environmentally friendly as it is lead-free. Because it is a much heavier material than lead or iron, tungsten carbide weights can be smaller for the same weight. This reduces air resistance, which improves casting distance. The reference selling price at other companies is approximately 20,000 yen/kg. When using for fishing weights, please devise your own method, such as putting it in a cylindrical case or tube.