This radius sanding block is made by Hosco in Japan. The radius sanding block is double sided. One side has the round 7.25 inch radius as seen on vintage Fender guitars and the other side has the more modern 9.5 inch radius.

The radius block is made of alder and measures 80x150mm. The sanding part is 65 x 150mm.

Sandpaper is easily attached using double stick tape and can be cut to fit the sanding block using and a sharp knife blade.