... 2. 24#-120# 3. 2", 3", 4.Original Manufacturer sintered alumina Flap disc with abrasive maretial AO.ZO, 4" to 7 ... " ,customize for client need....................................1. sintered alumina flap disc, with fiberglass backing pad Size Arbor GRIT MAX ... . Best at more dramatic angle of 15-25 degrees.. sintered alumina Flap Discs 2" ,3",4",4-1/2",5",7 ...