Mojo Mud Is a Tungsten based Non-Toxic putty. Tugsten is almost twice as heavy as lead and over three times as heavy as most other non-toxic materials. This allows you to have a heavy weight in a small obscure size. The texture of Mojo Mud is softer and tackier than most other putties and is reuseable. Finding the perfect amount of weight is an easy task with this. You can add or remove small amounts with a quick pinch. The soft nature of Putty does not snag like hard shot and if it does you can pull it off the leader often saving your rig.