Diablo Sanding Disc Kit, 5 in Dia, 40, 80, 120 Grit, Ceramic Abrasive, Bond Type: Endura, Applicable Materials: Metal, Plastic, Wood, Includes: (2) Ultra Coarse/Fast Removal 40 Grit Pads, (2) Coarse/Removal 80 Grit Pads and (1) Fine/Final Prep 120 Grit PadStickfast backing an industrial grade pressure sensitive adhesive (PSA) backing for a strong and secure bondPremium ceramic blend – hi-quality formulation designed to maximize sanding disc performanceClog-shield – high-performance separate coating that reduces pitch build up and clogging for maximum productivityENDURA-BOND a specialized high strength resin provides superior grit-to-backing bond for extreme durabilityBreak-through innovations that improve performance, extend sanding life and increase productivity