The 6517 is a great option to upgrade or replace the nut on your electric guitar equipped with the Floyd Rose locking nut. It serves to replace FR Original #2 locking nut. It is pre-slotted so it will make for an easy install. Advanced Slot Design: Our reimagined slots perfectly accommodate the unique string behavior on Floyd Rose-style guitars, ensuring precision and stability. Precise Radius Matching: Lock nuts from various manufacturers often miss the mark on radius accuracy. With the Un-Lock Nut, select the perfect radius for your guitar. Crafted from Black TUSQ XL, it allows for individual string height adjustment, ensuring unmatched precision. Customizable String Heights: The Un-Lock Nut stands out with its ability to be customized for each string's height, offering the adaptability of a standard TUSQ XL nut. Optimized for Floyd Rose: Designed for Floyd Rose-style bridges and locking nuts, the Un-Lock Nut integrates seamlessly, requiring no guitar modifications. Enhanced String Stress Distribution: Its extended ramps distribute string stress more evenly, infused with triple the self-lubrication for a friction-free glide, without affecting the nut slot integrity. Cost-Effective for Manufacturers: The Un-Lock Nut isn't just a player's dream; it's a boom for manufacturers. Its design simplifies installation, increases accuracy in string radii, and boosts customer satisfaction. Effortless Installation: Installing the Un-Lock Nut is straightforward. Just sand the ends for a flush fit and use a bit of white wood glue. No guitar modifications are needed. Available Sizes: offered with a 10" radius in FR Original #2 and FR Original #3/#4 sizes, with 12” in FR Special, and with 16” in IBZ options.