This Humminbird Knob alternative is perfect for Helix models 7,8,9,10, and 12 for users who want to secure their fishing equipment. The Tamper Proof Bolts included in this lock will provide a theft deterrent solution, ensuring the safety of your valuable gear. Made of high-quality materials like Nylon, Stainless Steel, and Plastic, this lock is rust-free and durable. It is designed to fit easily, and the unbranded aspect ensures that the lock will blend in with your existing gear seamlessly. Suitable for freshwater fishing, this lock is perfect for catching bass and other freshwater fish. The black color of the lock adds to its aesthetic appeal. Proudly made in the United States, this lock is an essential accessory for any angler.