These rigid 1" Dia. X 4-1/2" 100 grit aluminum oxide sanding sleeves are perfect for use with popular sanding drum kits. Keep plenty of these consumable sanding sleeves on hand. Sold in a 3 pack. Grizzly H5442 - 1" Dia. x 4-1/2" A/O Hard Sanding Sleeve, 100 Grit, 3 pk.