ITEM NAME:1pc Radius Sanding Block for Guitar Bass Fret Leveling Luthier Tool 16-14 Description: Wooden Fingerboard Leveling Sanding Block for Electric/Acoustic Guitar Bass. Used for shaping a radiused fretboard and leveling installed frets Various radis are available : 7.25"/9.5", 10"/12", 14"/16". Material: Maple Package Includes: 1pc Radius Sanding Block SKU: ALU0008879478007471.Wooden Fingerboard Leveling Sanding Block for Electric/Acoustic Guitar Bass. 1pc Radius Sanding Block. Used for shaping a radiused fretboard and leveling installed frets. Various radis are available : 7.25"/9.5", 10"/12", 14"/16".