5 Pack, 6" 6 TPI Shank Jigsaw Blade, For B4050 In-Line Grip Jigsaw, For Straight Parallel Cuts, Very Fast Cuts In Hard & Soft Wood, Particleboard 1/4" - 4", Fits All Bosch Models 1581AVS, 1581AVSK, 1584AVS, 1584AVSK, 1587AVS, 1587AVSK, 1587AVSP, As Well As Other Older Bosch Models, Fits Any Jigsaw That Takes T-Shank Blades.