The GrandTune system features a 1:18 gear ratio for precise and smooth action. Its gears are manufactured with high precision and without polymer coatings, which ensures perfect performance and prevents stick-slip, guaranteeing zero or minimal wear. In addition, they are permanently sealed and coated, which prevents degradation and ensures long maintenance-free performance. The gearwheels, manufactured with a new brass formula, offer a smooth and even feel. String Roller Deluxe posts feature state-of-the-art ball bearings for responsive tuning without locking or rattling.
Standard dimensions make installation easy, and countersunk screw holes allow for a solid fit and a perfect, quiet coupling. Its chassis is decorated with the Lyra motif characteristic of concert guitars. All GrandTune Classic string rollers have brass-coated string holes.
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