The CRL Detail Belt Sander is the ideal sander for getting into small or intricate areas for finishing detail work. Using 1/2" x 18" (13 x 457 mm) silicon carbide abrasive belts (sold separately) finishing the inside edges of circles or notches becomes simple and easy. The added bonus of this unique tool is the inclusion of two additional belt guide arms: One angled tip arm for the 1/2" x 18" belts that runs belts with a 45 degree sanding surface, and a mini belt guide arm that uses 5/16" x 18" (8 x 457 mm) abrasive belts for really intricate sanding jobs. All three arms are included with the sander in a black plastic storage case. CRL Glass Grinding Belts for this sander are available in grits from 80X to 400X. Important Notes: Safety glasses should be worn during any glass fabrication process, and a respirator may be advisable under certain conditions.