NARROW DOMED DISCS, TO MAXIMIZE THE FLAT WORKING AREA. IT ALLOWS YOU TO MAKE MORE CUTS, DEEPER THAN A DEPRESSED CENTER DISC AND THE SAME DURATION AND CUTTING CAPACITY OF A FLAT DISC WITH THE ADVANTAGE OF GREATER RIGIDITY GIVEN BY THE DEPRESSED CENTER SHAPE AND THE DOME. THE EXTREMELY THIN THICKNESS ALLOWS THE EXECUTION OF CUTS WITH MINIMAL FORMATION OF BURRS.