--- product_id: 254833104 title: "FretGuru Diamond SharkFin Fret Crowning File MD/LG" brand: "fretguru" price: "$164.79" currency: USD in_stock: true category: "Fret Guru" url: https://www.desertcart.us/products/254833104-fretguru-diamond-sharkfin-fret-crowning-file-md-lg store_origin: US region: United States of America --- # Dual Integrated Arc precision geometry Industrial diamond cutting surface High-carbon steel durability FretGuru Diamond SharkFin Fret Crowning File MD/LG **Brand:** fretguru **Price:** $164.79 **Availability:** ✅ In Stock ## Summary > 💎 Crown your frets like a pro—comfort, precision, and durability in one sleek tool! ## Quick Answers - **What is this?** FretGuru Diamond SharkFin Fret Crowning File MD/LG by fretguru - **How much does it cost?** $164.79 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/254833104-fretguru-diamond-sharkfin-fret-crowning-file-md-lg) ## Best For - fretguru enthusiasts ## Why This Product - Trusted fretguru brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Built to Last & Protect:** Premium steel with beveled edges guards your fretboard from scratches while delivering consistent pro-level results. - • **Ergonomic Top-Down Control:** Reduce hand fatigue with natural grip and precise downforce for marathon fret crowning sessions. - • **Chatter-Free Cutting Surface:** Smooth, ready-to-polish fret crowns with minimal sanding—get gig-ready frets faster. - • **Versatile Medium/Large File Sides:** Two-in-one design adapts to frets from .080" to .110" wide, saving time and space in your toolkit. - • **Dual Integrated Arc (D.I.A.) Geometry:** Achieve razor-thin, perfectly shaped fret crowns that preserve your fret leveling work. ## Overview The FretGuru Diamond SharkFin Fret Crowning File MD/LG is a professional-grade luthier tool designed for frets .080" to .110" wide. Featuring ergonomic top-down control and proprietary Dual Integrated Arc geometry, it delivers precise, chatter-free fret crowns with minimal effort and fatigue. Crafted from high-carbon steel with an industrial diamond cutting surface, it ensures long-lasting performance on nickel-silver and stainless frets while protecting your guitar’s fretboard. Ideal for serious bench time, this versatile two-sided file streamlines fret repair and setup, making it a must-have for both beginners and seasoned guitar techs. ## Description Buy FretGuru Diamond SharkFin Fret Crowning File MD/LG | Ideal for Frets .080" to .110" Wide, Pro Luthier Fret Repair Tool, Ergonomic Top-Down Control, Creates Razor-Thin Crowns: Tools - desertcart.com ✓ FREE DELIVERY possible on eligible purchases ## Features - ERGONOMIC TOP-DOWN CONTROL: SharkFin places your hand directly above the cutting action, allowing controlled downforce without using a death grip – reducing fatigue during repetitive fret crowning work & providing true 11 cutting feedback - RELAXED UN-GRIP CUTTING STROKE: Designed so you can ease your grip during the cutting stroke & stay relaxed on the back stroke helping prevent hand pain, wrist, forearm strain & the cumulative fatigue that makes fret crowning feel like punishment; comfort you'll notice on the first fret & appreciate even more on the final fret - D.I.A. CUTTING GEOMETRY FOR PRECISION CROWNS: Proprietary Dual Integrated Arc (D.I.A.) geometry delivers exceptional control & predictability as the crown narrows prevent you kissing the fret top so your freshly leveled frets stay intact while you dial in razor-thin centerlines - CLEAN CUTS READY-TO-POLISH FINISH: Chatter-free cutting leaves smooth crowns with minimal file marks so you sand less, preserve the crown & arrive at sparkling frets faster. The SharkFin design also solves the challenge of working on your upper frets with plenty of clearance for the guitar body & toggle switch - BUILT FOR SERIOUS BENCH TIME: Made from high-carbon steel with finely graded industrial diamond cutting surface for long life - consistent performance on nickel-silver & stainless frets; rounded, contoured, beveled edges and corners help protect fretboards & guitar tops from deep scratches and gouges ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B08P81H8Q2 | | Best Sellers Rank | #7,122 in Musical Instruments ( See Top 100 in Musical Instruments ) #136 in Guitar Tools | | Body Material | Tool Steel | | Color Name | Diamond Sharkfin MD/LG | | Customer Reviews | 4.8 4.8 out of 5 stars (1,366) | | Date First Available | November 27, 2020 | | Item Weight | 4.2 ounces | | Item model number | FG-DSF-ML | | Material Type | Tool Steel | | Product Dimensions | 8 x 1 x 0.5 inches | | Proficiency Level | All From Beginners to Luthiers | ## Images ![FretGuru Diamond SharkFin Fret Crowning File MD/LG - Image 1](https://m.media-amazon.com/images/I/61vGdjvo76L.jpg) ## Available Options This product comes in different **Color** options. ## Questions & Answers **Q: Will this tool work for stainless steel frets?** A: Yes. It will just take more elbow grease on your end, and wear out the tool faster **Q: Will it work on low narrow frets on mandolins** A: Hello Richard, Depending on how narrow your mandolin frets are, this may not be the ideal file for that application. Do you know how wide the frets actually are? The sweet spot for the narrow side of this file is around .080" to .095" + or so. The good news is we have a smaller version of this file in the works. **Q: How long should it last? I've used my 2.0 on about 25-50 necks and it seems dull.** A: 25 to 50 necks? Then It paid for itself eons ago. I've only done 2 necks so far. If it's like my other files then it should last a lifetime. That is, if you keep it clean at all times with a brass brush and chalk. And store it in a dry place. Hope I get 50 necks out it. I'll be doin a stainless fret job soon. True test on that one, **Q: Is it faster to use expedited shipping? Does it come with tracking number?** A: Yes, if you order the "Seller fulfilled" version (will say Ships from FretGuru / Sold by FretGuru, NOT "Ships from Amazon") and select Expedited, I can personally package it now and get it out the door today (Saturday). You'll get the tracking number. Thanks! Bernie / FretGuru ## Frequently Bought Together - FretGuru Guitar Fret Crowning File - Dual Sided Dagger 2.0 - MD and LG/XL - Ideal for Frets between .080" to .110" wide - Professional Luthier Tool for Electric, Acoustic and Bass Guitars - FretGuru Ultimate Fret End File 2 - Fix Sharp Fret Ends, Fret Sprout, Fret End Dressing File Pro Luthier Tool Guitar Tech [FINALLY AVAILABLE AGAIN - ADVANCED NEW DESIGN SHIPPING NOW] - FretGuru Leveling Beam Replacement Sandpaper - 400 Grit 5 - Pack Advanced Ceramic Film - Backed Self - Adhesive Strips for All Sanding Beam Fret Leveler 16” 400mm P400 --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/254833104-fretguru-diamond-sharkfin-fret-crowning-file-md-lg](https://www.desertcart.us/products/254833104-fretguru-diamond-sharkfin-fret-crowning-file-md-lg) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-09-03*