2SAND’s Spindle sleeves feature an aluminum oxide abrasive. These spindle sander sleeves come in a 5 pack of 3” x 4 ½” spindle sleeves. The available grits we have are 50, 80, and 120 grit. The assortment pack includes 5 sleeves in the following numbers and grits: one 50 grit, two 80 grit, and two 120 grit sleeves.