Set has 3 removable blades. The 4-1/2in. long blade for large inside cuts or thick material and 2 small keyhole blades, with push and pull style teeth for trimming and shorter cuts.
Replacement Blades Sold Separately
9636458 24TPI medium thin kerf 4-1/2in. long large saber
9636408 24TPI 2-1/4" long keyhole saber (push) blade
9636406 24TPI 2-1/4" long keyhole saber (pull) blade