Diablo 10 pack of 1/3" 120 grit sanding sheets are 9" x 3-2/3". Premium 1/3 sanding sheets include break-through innovations that improve performance, extend sanding life and increase productivity. Premium aluminum oxide blend a superior quality formulation designed for fast material removal and long sanding life. Clog-Shield, a high performance stearate coating reduces pitch build-up and clogging for maximum productivity. Endura-Bond, a specialized high strength resin provides superior grit-to-backing bond for extreme durability.