High performance coated abrasive discs used on random oribtal sanders with dust extraction for polishing solid surface materials, such as Corian and LG HI-MACS.  It's open structure ensures continuous extraction of dust from the whole surface meaning much better sanding patterns and minimisation of dust residue on sanded surfaces.  Available in grades 80, 120, 180, 240, 320, 400, 500, 600 and 800.