- Time-saving string adjustment: Use this spacer washer to dramatically reduce string setup time, especially when replacing broken strings on a floating tremolo bridge. No meticulous tweaking or holding the tremolo bar down is required. - Scratch protection and stability: The underside is made of ABS to cover the full bottom of the washer, preventing scratches and securing it in place. Conical sides run along the length for easy insertion under the bridge, helping keep your guitar in pristine condition. - Compatibility and options: Fits 6- and 7-string floating tremolo bridges. Available with 5 mm sides; select the size that matches your guitar model. Suitable for a range of electric guitars. - Use scenarios: - Replacing a broken string on a floating tremolo during a live performance or rehearsal. - Quick string changes during studio sessions without risking finish damage. - Maintenance and setup across different guitar models with 6- or 7-string tremolo systems.