Norton Abrasives grit cloth PSA discs are used on contours or flat surfaces and are ideal for light to medium pressure grinding, levelling, blending and finishing applications. They feature aluminium oxide or zirconia alumina materials for maximum bending, high impact strength & excellent initial cut rates. They use adhesive attachment methods when mounting to the tool's disc pads for easy installation & removal. These discs offer strong tear & edge-fray resistance and have heavy X & Y-weight cloth backings. They come without center holes providing full face-usage and are available in medium, coarse & extra coarse grades with up to 80 grits.