- Universal tool for precise guitar and bass adjustment - For precise measurement and adjustment of the fretboard radius - Suitable for fingerboards from 66.7 - 82.3 mm (2,625" - 3,25") wide - Set of 2 with the most common fretboard radii 7.25", 9.5", 10", 12", 14", 15", 16" & 20" - With etched radii - Made of stainless steel - Laser-cut EUR 8.00 - See more - Buy online