Lifetime Replacement Guarantee If, for any reason, your Knot-Tying Tool becomes in need of repair, simply mail it to Lake Products.Lake Products LLCP.O. Box 116North Branch, Michigan 48461Your Knot-Tying Tool will either be repaired or a new one will be sent to you. Want to easily Tie a Perfect Fishing Knot? Our knot tying tools make it simple! Shop Products