This exceptional sponge takes the performance and quality of premium grain latex-backed sandpaper and adds the convenience of a built-in sanding block. These innovative premium sanding sponges greatly outperform traditional sanding sponges and provide much better finishing results. Offered in a wide and specific grit range to take your project from beginning to end.Details:Green3" x 5" x 1" (7.6cm x 12.7cm x 2.5cm)Medium 80 gritBest for course sandingUse on wood, metal, fiberglass and painted surfacesAdvanced resin bonding system resists heat and moistureAnti-clog stearate coatingP-Grade aluminum oxide grainHeavy-duty latex backing