{"product_id":"ratio-locking-guitar-tuners-6-in-line-39-1-12-1-calibrated-gears-black-chrome-staggered-posts-right-hand-invisomatch-no-drill-plates-included","title":"Ratio Locking Guitar Tuners – 6-in-Line – 39:1–12:1 Calibrated Gears – Black Chrome – Staggered Posts – Right Hand – InvisoMatch No-Drill Plates Included","description":"Upgrade your guitar’s performance with Ratio 6-in-Line Locking Machine Heads in a stunning black chrome finish. Each tuner features a calibrated gear ratio (from 39:1 to 12:1) designed specifically for each string, giving you the same tuning speed and feel across your entire guitar — faster, more precise, and more consistent. Ratio tuners come equipped with staggered posts to create the perfect string break angle, improving tuning stability and eliminating the need for string trees. Built for right-handed guitars with 6-in-line headstocks, they deliver professional-level performance whether you're recording, gigging, or practicing at home. Installation is easy: you can mount them just like any traditional machine head or take advantage of the four complimentary sets of InvisoMatch Adapter Plates included in the box. With InvisoMatch, you can install Ratio tuners with no drilling required, covering most major brands' existing holes for a clean, hassle-free upgrade. There are other models of InvisoMatch available. Precision performance, effortless installation, and a sleek, durable finish — Ratio Machine Heads are made to make your guitar feel and sound better than everCalibrated Gear Ratios for Each String Each string has an ideal gear ratio from 39:1 to 12:1 for the same tuning speed and feel, making tuning faster and more accurate. Smooth Locking System Locking tuners hold strings tight with less wraps, for better tuning stability and faster string changes. Staggered Posts for Better Break Angle Staggered posts improve break angle over the nut on 6-in-line headstocks, eliminating string trees. No-Drill InvisoMatch Mounting Plates Install like any machine he","brand":"Ratio","offers":[{"title":"Default Title","offer_id":48345182142631,"sku":"GraphTech-PRL-9721-B0","price":136.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0699\/8546\/8583\/files\/medium_098e6fef-39a8-42f8-8180-a4230f8c5a83.jpg?v=1775513787","url":"https:\/\/www.zentrallc.com\/products\/ratio-locking-guitar-tuners-6-in-line-39-1-12-1-calibrated-gears-black-chrome-staggered-posts-right-hand-invisomatch-no-drill-plates-included","provider":"Zentra, LLC","version":"1.0","type":"link"}