Diablo 4-1/2 x 5-1/2-In. 40-Grit Palm Sander Sanding Sheets, 6-Pack are for final sanding applications, delivering efficient and smooth results. Crafted from a premium aluminum oxide blend, these sanding sheets provide fast material removal while ensuring a long sanding life. They incorporate Clog-SHIELD technology to reduce pitch build-up and clogging, thanks to a unique blend of grinding agents. The ENDURA-BOND backing is made with a high-strength resin that s grain bonding and durability. Designed specifically for use with 1/4 palm sanders, these sheets work effectively on wood, metal, and plastics. Model Number: DCS045040S06G