Guitar string ferrules are very important when replacing guitar strings. They are attached to the back of the guitar, sandwiching the guitar bridge. Suitable for various electric guitars and basses. Guitar string ferrule size: 8.5 mm x 7 mm x 3 mm (L*OD*ID), 3 mm hole diameter Rust-resistant, durable, and long-lasting. Easy to install and convenient to use. Small, lightweight, and easy to carry. Installation instructions: 1. Select the appropriate size guitar string ferrule. 2. Remove the guitar string ferrule to be replaced. 3. Install on the electric guitar. Thank you for viewing ⭐️ Instant purchase OK ♪♪♪ If you have any questions, please ask before purchasing ☺️ Also, please read the profile for other information ✨ There are many other products too ♡ We will give you a discount for multiple purchases ♡ #saya's products ☜☜ 33-48 837