These rigid 3/4" Dia. X 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 pk. Woodstock D1437 - 3/4" Dia. x 2" A/O Hard Sanding Sleeve, 100 Grit, 3 pk.