5 Pack, 3" 36 TPI Metal Blade, For Very Thin Material, Straight Cuts In Metal, Non-Ferrous Metal, Sheet Metal, Aluminum 1/64" - 3/64", For Mateial Thicknesses Under 3/64" Use A Thin Piece Of Scrap Wood As Backing, Fits Bosch Models 1581AVS, 1581AVSK, 1584AVS, 1584AVSK, 1587AVS, 1587AVSK, 1587AVSP, As Well As Other Older Bosch Models.