Champagne Magnum is sand paper technology at it's best. It cuts faster, runs cooler, resists loading better and lasts far longer than any conventional sandpaper. No system holds better or fastens more easily than Speed-Grip. Stick and Sand Sheet Rolls are PSA Backed, so you can peel them off easily and stick them on any length, quickly. Use on hand sanding blocks, file shoes or file boards. Fits sheet-roll dispenser #42773 Premium heat-treated grain extends life and gives a 30 - 50% faster cut rate. Premium B-Weight latex paper backing improves performance, is more flexible and easier disc removal FEPA P-graded grain achieves a more consistent uniform scratch pattern. Re-designed bond system optimizes grain adhesion and extends cut life. Newest water based stearate No-Fil improves load resistance. No pigment in No-Fil or bond eliminates the risk of color transfer and creates a much stronger bond