Picasso Tungsten Flipping Weights are INSERT FREE/ FRAY FREE and made of 97% pure tungsten for the greatest sensitivity and ease of "pegging". Their special profile makes them ideal for penetrating grass, flipping docks, and working through vegetation with fewer hang ups. In addition they are excellent for "carolina rigging" .Our proprietary Duraseal Coating is hard, ultra smooth, and resists chipping for long lasting color. They are Eco-Friendly and lead free.