SharkFin Guitar Fret Crowning File | Professional Luthier Fret File | Top-Down Ergonomic Control | D.I.A. Geometry | Razor-Thin Crowns for Guitar & Bass Frets | MD/LG/XL

ERGONOMIC TOP-DOWN CONTROL: This tool positions your hand directly above the cutting action, enabling controlled downforce without requiring a tight grip minimizing fatigue during repetitive fret crowning tasks and delivering true 1:1 cutting feedback.
RELAXED UN-GRIP CUTTING STROKE: Engineered to let you loosen your grip during the cutting stroke and remain relaxed on the back stroke, helping to avoid hand pain, wrist, forearm strain, and the cumulative fatigue that can make fret crowning feel punishing. You'll notice the comfort on the first fret and value it even more on the last one. D. I. A.
CUTTING GEOMETRY FOR PRECISE CROWNS: The proprietary Dual Integrated Arc (D. I. A. ) geometry provides excellent control and predictability as the crown narrows, preventing contact with the fret top so your freshly leveled frets remain intact while you establish fine centerlines. CLEAN CUTS WITH A READY-TO-POLISH FINISH: Chatter-free cutting produces smooth crowns with minimal file marks so you sand less, preserve the crown shape, and achieve polished frets more quickly. The design also addresses the challenge of working on upper frets by providing ample clearance for the guitar body and toggle switch.
CONSTRUCTED FOR EXTENDED BENCH USE: Crafted from high-carbon, heat-treated European steel for reliable performance on nickel-silver and stainless steel frets. Rounded, contoured, and beveled edges and corners aid in protecting fretboards and guitar tops from deep scratches and gouges