Curved Small RIFFLER HALF ROUND file 140 mm overall length approx. Gritted length 7.5cm. Perma Grit Riffler for Sculptors, Wood carvers, Walking stick horn & antler caving. Reaches into tight sports. Use with or without a Handle, fits the NFH Handle with 3 mm collet. Ultra Fine grit equivalent to UK 420 grit sandpaper.