FRTLZR® Fret Polishing Kit Basic Bundle.

FRTLZR® Radius Gauge with Fret Slot Depth Indicators.

Fret buzz doesn't fix itself.

Precision leveling beams, crowning files and setup gauges for guitar enthusiasts who'd rather solve it than live with it. Most FRTLZR® tools are made in Germany & EU.

Get the Right Tool Free Setup Guide

Most FRTLZR® products are made in Germany & EU Trusted by guitarists, luthiers & techs Ships from EU & UK warehouses

FRTLZR® Fret Polishing Kit PREMIUM BUNDLE.

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The tools guitarists and luthiers reorder and recommend — leveling beams, polishing kits and setup gauges.

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New arrivals

Introducing our latest tools — built to solve real problems on your guitar. See what's new.

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All tools

Every FRTLZR® tool in one place — from your first setup to a full refret.

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Highlights

Interactive Guitar Setup Guide. Dial it in. Share your numbers.

Free interactive guide

Set up your guitar like a pro.

A free, interactive step-by-step guide for electric, acoustic and bass — neck relief, action, nut, pickups and intonation, with the exact target numbers. Download a printable PDF at the end.

Open the Setup Guide Free · no sign-up

Electric · Acoustic · Bass
mm & inch
Diagrams + target specs
Printable PDF

Tech it easy with FRTLZR

Precision Guitar Fretwork & Setup Tools

Eliminate fret buzz and achieve a perfect guitar setup.

FRTLZR® tools are designed for guitarists, luthiers, and guitar techs who want precise, reliable, and professional-grade results without unnecessary complexity.

From fret leveling to setup adjustments, our tools are engineered for accuracy, usability, and long-term performance. Most FRTLZR® products are made in Germany to ensure consistent quality and precision.

Take control of your instrument and achieve cleaner playability, better sound, and a smoother playing experience.