5 pack, 3" 24 TPI bi-metal blade, for thin material, straight cuts, flexible & break resistant, in metal, non-ferrous metal, aluminum, sheet metal, plexiglass 1/16" - 1/8", fits Bosch models 1581AVS, 1581AVSK, 1584AVS, 1584AVSK, 1587AVS, 1587AVSK, 1587AVSP, as well as other older Bosch models.