Features: the polishing gasket prevents wood chips from the fretboard from being carried through when removing the frets, making fret removal less careful. OOTDTYThe fingerboard of your guitar or bass fretboard from scratches or damage during assembly and polishing. Strap design, you can tie the elastic rope to prevent it from falling off, which is convenient and simple. Suitable for guitar, bass, ukulele, mandolin and other similar instruments. Package includes: 2x polishing gasket, 1x whetstone. Specification: Material: MetalStyle: With Blue Polished Stone/With Red Polished StoneLarge: Approx. 81x2 2mm/3.19x0.87inchSmall: approx. 81x1 3mm/3.19x0.51inch Package Includes: 2x Polishing Gasket1x WhetstoneNote: Please allow 1-2cm errors due to manual measurement, please make sure you do not mind before ordering. Due to the difference between different monitors, the picture may not reflect the actual color of the item.