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-fill improves load resistance no pigment in no-fill or bond eliminates the risk of color transfer and creates a much stronger bond a275 is sand paper technology at it’s best. it cuts faster, runs cooler, resists loading better and lasts far longer than any conventional sandpaper.