This Hosco Double Sided Fretboard Radius Sanding Block have a different size radius on each side to provide a convenient way to add an even, accurate curved surface to your fingerboards.

These come in the most common fretboard radiuses and are labelled with the metric mm equivalent size (so the 7.25" & 9.5" block is labelled 184 and 241, the 10" & 12" labelled 254 and 305, and the 14" & 16" labelled 356 and 406). You can mount the sandpaper to the radius block with either self adhesive sandpaper strips or by using low strength double sided sticky tape or surface mount spray. The blocks have curved edges to keep them comfortable on the hand while sanding and the convex sanding surface is 65 x 150 mm (6" long).