--- product_id: 254833104 title: "Diamond SharkFin Fret Crowning File MD/LG" price: "Β₯25487" currency: JPY in_stock: true url: https://www.desertcart.jp/products/254833104-diamond-sharkfin-fret-crowning-file-md-lg store_origin: JP region: Japan --- # Ergonomic top-down control Industrial diamond cutting surface High-carbon steel for durability Diamond SharkFin Fret Crowning File MD/LG **Price:** Β₯25487 **Availability:** βœ… In Stock ## Summary > πŸ’Ž Crown your frets like a proβ€”comfort, precision, and durability in one sleek tool! ## Quick Answers - **What is this?** Diamond SharkFin Fret Crowning File MD/LG - **How much does it cost?** Β₯25487 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/254833104-diamond-sharkfin-fret-crowning-file-md-lg) ## Best For - Customers looking for quality international products ## Why This Product - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Comfort-First Design:** Relaxed cutting stroke prevents hand & wrist strain during extended use - β€’ **Dual Integrated Arc Geometry:** Proprietary D.I.A. design ensures razor-thin, consistent fret crowns - β€’ **Effortless Precision Crowning:** Ergonomic top-down grip reduces fatigue & boosts control - β€’ **Smooth, Ready-to-Polish Finish:** Chatter-free cuts minimize sanding, preserving fret integrity - β€’ **Built to Last Through Bench Time:** High-carbon steel with diamond surface for long-lasting performance ## Overview The FretGuru Diamond SharkFin Fret Crowning File MD/LG is a professional-grade luthier tool designed for frets .080" to .110" wide. Featuring an ergonomic top-down grip and proprietary Dual Integrated Arc geometry, it delivers precise, chatter-free fret crowning with minimal fatigue. Crafted from high-carbon steel with an industrial diamond cutting surface, it ensures long-lasting, consistent performance on nickel-silver and stainless frets, making it a must-have for serious guitar technicians. ## 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 βœ“ 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 | |---------------|-------| | Best Sellers Rank | #9,656 in Musical Instruments ( See Top 100 in Musical Instruments ) #200 in Guitar Tools | | Customer Reviews | 4.8 out of 5 stars 1,365 Reviews | ## Images ![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? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.jp/products/254833104-diamond-sharkfin-fret-crowning-file-md-lg](https://www.desertcart.jp/products/254833104-diamond-sharkfin-fret-crowning-file-md-lg) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-09-27*