Phoneix 2 Pcs Guitar Fret Fingerboard Protectors Wide Narrow Brand new and high quality. Bendable stainless steel fretboard protector. Comes with 2pcs fretboard protectors, one is wide and the other narrow. Prevents scratching or damaging to guitar or bass fretboard when filing and polishing frets. Useful for luthiers, guitarists, and DIY for many fret works.