22-part set for sanding in grooves and on outside radii. Contents: 1 holder with 6 different profile inserts. 1 x V-form for 90° angle, 1 x trapezium form for tongue-and-groove connections, 1 x straight form for profiles, 1 x convex form (large), 1 x concave and 1 x convex form (small) and sanding sheets, 5 each of 80, 120 and 180 grit.