Fret Crowning File for Guitar Repair and Maintenance The Fret Crowning File is an essential tool for guitar repair and maintenance. It is a metal file designed to shape and polish the frets on a guitar, making them smooth and level for optimal performance and sound quality. Here are some key features and specifications of this product: Features: Three sizes carborundum edges for different frets Durable and quick polish Wooden handle design for comfortable grip High-quality stainless steel material for strength and durability Suitable for making guitar frets smooth without any damage A great assistant tool for luthiers or guitar players Specifications: Material: High-quality stainless steel Unit: mm / in Scale for string height: 0.01-0.14in / 0.25-3.50mm Scale for bridge saddle slot depth: 0-0.875in / 0-20mm Scale for nuts saddles and polepieces: 0-0.75in / 0-20mm Size: 8.9 * 5.1cm / 3.5 * 2in (length * width) Weight: 22g / 0.78oz Package Includes: 1 * Fret Crowning File with 3 carborundum edges 1 * String Action Ruler for measuring string height, bridge saddle slot depth, and nut/saddle/polepiece height Simple use instruction on the package Whether you are a luthier or a guitar player, the Fret Crowning File is a must-have tool for maintaining and repairing your guitar. Its durable construction, comfortable handle, and versatile design make it a great addition to your toolkit. With the String Action Ruler included in the package, you can also measure and adjust your guitar's setup to achieve the best possible performance and sound quality. Order your Fret Crowning File today and take your guitar maintenance to the next level! Free Shipping - Allow 30 days CALIFORNIA PROPOSITION 65 WARNING WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov.