1、LOCKING NUT DESIGN: Feature excellent zinc alloy material that is long lasting and erosion resistant, ensuring long term use, you can use with confidence 2、SECURE STRING LOCK: Locking nut can securely grip strings, stabilize the neck, and zinc alloy won't damage the neck. Allow for accurate tuning and easy string locking 3、EXQUISITE CRAFTSMANSHIP: Locking nut adopt delicate workmanship, bring accurate shape, and excellent durability help securely lock strings in place 4、EASY INSTALLATION: Guitar string lock come with 6 installation screws for convenient and time saving installation, saving both time and labor 5、REPLACEMENT PART: Ideal for replacing old or damaged locking nuts on electric guitar bridge components, useful and practical, can be used as a gift