Eco Pro Tungsten Drop Shot Weights get down fast and let you feel every bing and bump. 97% pure Tungsten is the difference over lead and it is eco friendly too. More streamlined, more dense and super sensitive, these drop shot weights attach quickly; simply insert the end of your line and inch or two through the clip and pull up. Your line is now securely attached with no tying! Finished with a special sela coat that resists chips and scratches.