Non toxic and completely lead-free! The Mr. Pike Slide Sinkers are weights are perfect for Float and Ledger fishing with deadbaits and can be attached to the main line in one of two ways. One way is as a sliding weight guided through the tube, which ensures free weighting of the rig without resistance. The other is as a fixed weight via the silicone tubes supplied. These are threaded onto the main line and the Slide Sinker is inserted and fixed at the required distance.