Atlas Mike's Magic Thread Bait Accessory - It's called Magic because that's what it is! Magic Thread makes tying bait sacs easier and faster. Just three turns around the stem of the sac, pull tightly; then three more turns and pull tightly again. That's all! No knotting required! Simple and effective. Also makes an excellent bait saver. Wrap around bait on hook or lures to hold bait on longer. Works with shrimp, herring, sardine, salmon roe, crayfish, prawn, etc.