Features: Brand new and high quality. Accurately true or change a fingerboard's radius. Used for shaping a radiused fretboard and leveling installed frets Various radius are available: 7.25", 9.5", 10", 12", 14", 15", 16", 17", 20". When working on compound radius fretboard, simply change blocks as you progress along the neck. Specifications: Material: Wood Color: As Picture Show Length: 13cm/5.12" (Approx.) Height: 6.8cm/2.68" (Approx.) Weight: approx.250g Package Includes: 1 x Radius Sanding Block Note: Please be sure to verify the size before you order the item. Please refer to the measurement. Tiny measuring error is allowable in normal range. There might be a little color difference due to the monitor, camera or other factors, please refer to the physical item.